Home / 10,391,457.15-15,587,185.73-7,872,033.15

Finding the Fourth Proportional to 10,391,457.15, 15,587,185.73 and 7,872,033.15

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Solution

The fourth proportional to 10,391,457.15, 15,587,185.73 and 7,872,033.15 is: 11,808,049.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391,457.15 : 15,587,185.73 = 7,872,033.15 : x
  2. Step 2: Convert to fraction form
    10,391,457.15/15,587,185.73 = 7,872,033.15/x
  3. Step 3: Cross multiply
    10,391,457.15x = 15,587,185.73 × 7,872,033.15
  4. Step 4: Simplify right side
    10,391,457.15x = 122,702,842,742,406.78
  5. Step 5: Solve for x
    x = 122,702,842,742,406.78/10,391,457.15
  6. Step 6: Final answer
    x = 11,808,049.73

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.