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Finding the Fourth Proportional to 28,502.75, 42,772.49 and 15,364.28

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Solution

The fourth proportional to 28,502.75, 42,772.49 and 15,364.28 is: 23,056.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.75 : 42,772.49 = 15,364.28 : x
  2. Step 2: Convert to fraction form
    28,502.75/42,772.49 = 15,364.28/x
  3. Step 3: Cross multiply
    28,502.75x = 42,772.49 × 15,364.28
  4. Step 4: Simplify right side
    28,502.75x = 657,168,600.38
  5. Step 5: Solve for x
    x = 657,168,600.38/28,502.75
  6. Step 6: Final answer
    x = 23,056.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.