Home / 15,505.30-21,397.88-8,882.58

Finding the Fourth Proportional to 15,505.30, 21,397.88 and 8,882.58

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Solution

The fourth proportional to 15,505.30, 21,397.88 and 8,882.58 is: 12,258.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.30 : 21,397.88 = 8,882.58 : x
  2. Step 2: Convert to fraction form
    15,505.30/21,397.88 = 8,882.58/x
  3. Step 3: Cross multiply
    15,505.30x = 21,397.88 × 8,882.58
  4. Step 4: Simplify right side
    15,505.30x = 190,068,283.02
  5. Step 5: Solve for x
    x = 190,068,283.02/15,505.30
  6. Step 6: Final answer
    x = 12,258.28

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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.