Home / 15,627.48-21,565.38-8,915.28

Finding the Fourth Proportional to 15,627.48, 21,565.38 and 8,915.28

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Solution

The fourth proportional to 15,627.48, 21,565.38 and 8,915.28 is: 12,302.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,627.48 : 21,565.38 = 8,915.28 : x
  2. Step 2: Convert to fraction form
    15,627.48/21,565.38 = 8,915.28/x
  3. Step 3: Cross multiply
    15,627.48x = 21,565.38 × 8,915.28
  4. Step 4: Simplify right side
    15,627.48x = 192,261,401.01
  5. Step 5: Solve for x
    x = 192,261,401.01/15,627.48
  6. Step 6: Final answer
    x = 12,302.78

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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.