Home / 10,161.55-14,028.03-6,390.19

Finding the Fourth Proportional to 10,161.55, 14,028.03 and 6,390.19

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Solution

The fourth proportional to 10,161.55, 14,028.03 and 6,390.19 is: 8,821.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,161.55 : 14,028.03 = 6,390.19 : x
  2. Step 2: Convert to fraction form
    10,161.55/14,028.03 = 6,390.19/x
  3. Step 3: Cross multiply
    10,161.55x = 14,028.03 × 6,390.19
  4. Step 4: Simplify right side
    10,161.55x = 89,641,777.03
  5. Step 5: Solve for x
    x = 89,641,777.03/10,161.55
  6. Step 6: Final answer
    x = 8,821.66

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.