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Finding the Fourth Proportional to 19,251.92, 28,877.88 and 12,370.16

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Solution

The fourth proportional to 19,251.92, 28,877.88 and 12,370.16 is: 18,555.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,251.92 : 28,877.88 = 12,370.16 : x
  2. Step 2: Convert to fraction form
    19,251.92/28,877.88 = 12,370.16/x
  3. Step 3: Cross multiply
    19,251.92x = 28,877.88 × 12,370.16
  4. Step 4: Simplify right side
    19,251.92x = 357,223,996.06
  5. Step 5: Solve for x
    x = 357,223,996.06/19,251.92
  6. Step 6: Final answer
    x = 18,555.24

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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.