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Finding the Fourth Proportional to 30,253.92, 45,385.76 and 12,728.76

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Solution

The fourth proportional to 30,253.92, 45,385.76 and 12,728.76 is: 19,095.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,253.92 : 45,385.76 = 12,728.76 : x
  2. Step 2: Convert to fraction form
    30,253.92/45,385.76 = 12,728.76/x
  3. Step 3: Cross multiply
    30,253.92x = 45,385.76 × 12,728.76
  4. Step 4: Simplify right side
    30,253.92x = 577,704,446.46
  5. Step 5: Solve for x
    x = 577,704,446.46/30,253.92
  6. Step 6: Final answer
    x = 19,095.19

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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.