Home / 16,966.20-23,388.60-11,915.28

Finding the Fourth Proportional to 16,966.20, 23,388.60 and 11,915.28

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Solution

The fourth proportional to 16,966.20, 23,388.60 and 11,915.28 is: 16,425.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,966.20 : 23,388.60 = 11,915.28 : x
  2. Step 2: Convert to fraction form
    16,966.20/23,388.60 = 11,915.28/x
  3. Step 3: Cross multiply
    16,966.20x = 23,388.60 × 11,915.28
  4. Step 4: Simplify right side
    16,966.20x = 278,681,717.81
  5. Step 5: Solve for x
    x = 278,681,717.81/16,966.20
  6. Step 6: Final answer
    x = 16,425.70

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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.