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Finding the Fourth Proportional to 28,051, 38,711.22 and 15,476.56

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Solution

The fourth proportional to 28,051, 38,711.22 and 15,476.56 is: 21,358.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051 : 38,711.22 = 15,476.56 : x
  2. Step 2: Convert to fraction form
    28,051/38,711.22 = 15,476.56/x
  3. Step 3: Cross multiply
    28,051x = 38,711.22 × 15,476.56
  4. Step 4: Simplify right side
    28,051x = 599,116,519.00
  5. Step 5: Solve for x
    x = 599,116,519.00/28,051
  6. Step 6: Final answer
    x = 21,358.12

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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.