Home / 22,915.68-31,616.64-13,487.28

Finding the Fourth Proportional to 22,915.68, 31,616.64 and 13,487.28

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Solution

The fourth proportional to 22,915.68, 31,616.64 and 13,487.28 is: 18,608.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,915.68 : 31,616.64 = 13,487.28 : x
  2. Step 2: Convert to fraction form
    22,915.68/31,616.64 = 13,487.28/x
  3. Step 3: Cross multiply
    22,915.68x = 31,616.64 × 13,487.28
  4. Step 4: Simplify right side
    22,915.68x = 426,422,476.34
  5. Step 5: Solve for x
    x = 426,422,476.34/22,915.68
  6. Step 6: Final answer
    x = 18,608.33

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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.