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Finding the Fourth Proportional to 27,700.96, 38,228.88 and 15,126.88

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Solution

The fourth proportional to 27,700.96, 38,228.88 and 15,126.88 is: 20,875.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,700.96 : 38,228.88 = 15,126.88 : x
  2. Step 2: Convert to fraction form
    27,700.96/38,228.88 = 15,126.88/x
  3. Step 3: Cross multiply
    27,700.96x = 38,228.88 × 15,126.88
  4. Step 4: Simplify right side
    27,700.96x = 578,283,680.29
  5. Step 5: Solve for x
    x = 578,283,680.29/27,700.96
  6. Step 6: Final answer
    x = 20,875.94

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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.