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Finding the Fourth Proportional to 15,100.08, 20,836.92 and 8,385.06

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Solution

The fourth proportional to 15,100.08, 20,836.92 and 8,385.06 is: 11,570.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.08 : 20,836.92 = 8,385.06 : x
  2. Step 2: Convert to fraction form
    15,100.08/20,836.92 = 8,385.06/x
  3. Step 3: Cross multiply
    15,100.08x = 20,836.92 × 8,385.06
  4. Step 4: Simplify right side
    15,100.08x = 174,718,824.42
  5. Step 5: Solve for x
    x = 174,718,824.42/15,100.08
  6. Step 6: Final answer
    x = 11,570.72

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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.