Home / 15,775.17-21,772.25-9,487.55

Finding the Fourth Proportional to 15,775.17, 21,772.25 and 9,487.55

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Solution

The fourth proportional to 15,775.17, 21,772.25 and 9,487.55 is: 13,094.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,775.17 : 21,772.25 = 9,487.55 : x
  2. Step 2: Convert to fraction form
    15,775.17/21,772.25 = 9,487.55/x
  3. Step 3: Cross multiply
    15,775.17x = 21,772.25 × 9,487.55
  4. Step 4: Simplify right side
    15,775.17x = 206,565,154.19
  5. Step 5: Solve for x
    x = 206,565,154.19/15,775.17
  6. Step 6: Final answer
    x = 13,094.32

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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.