Home / 11,299.22-15,587.65-7,109.78

Finding the Fourth Proportional to 11,299.22, 15,587.65 and 7,109.78

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Solution

The fourth proportional to 11,299.22, 15,587.65 and 7,109.78 is: 9,808.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,299.22 : 15,587.65 = 7,109.78 : x
  2. Step 2: Convert to fraction form
    11,299.22/15,587.65 = 7,109.78/x
  3. Step 3: Cross multiply
    11,299.22x = 15,587.65 × 7,109.78
  4. Step 4: Simplify right side
    11,299.22x = 110,824,762.22
  5. Step 5: Solve for x
    x = 110,824,762.22/11,299.22
  6. Step 6: Final answer
    x = 9,808.18

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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.