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Finding the Fourth Proportional to 19,248.56, 28,875.87 and 8,155.28

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Solution

The fourth proportional to 19,248.56, 28,875.87 and 8,155.28 is: 12,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,248.56 : 28,875.87 = 8,155.28 : x
  2. Step 2: Convert to fraction form
    19,248.56/28,875.87 = 8,155.28/x
  3. Step 3: Cross multiply
    19,248.56x = 28,875.87 × 8,155.28
  4. Step 4: Simplify right side
    19,248.56x = 235,490,805.09
  5. Step 5: Solve for x
    x = 235,490,805.09/19,248.56
  6. Step 6: Final answer
    x = 12,234.20

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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.