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Finding the Fourth Proportional to 28,106.52, 38,787.78 and 15,532.08

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Solution

The fourth proportional to 28,106.52, 38,787.78 and 15,532.08 is: 21,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.52 : 38,787.78 = 15,532.08 : x
  2. Step 2: Convert to fraction form
    28,106.52/38,787.78 = 15,532.08/x
  3. Step 3: Cross multiply
    28,106.52x = 38,787.78 × 15,532.08
  4. Step 4: Simplify right side
    28,106.52x = 602,454,901.98
  5. Step 5: Solve for x
    x = 602,454,901.98/28,106.52
  6. Step 6: Final answer
    x = 21,434.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.