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Finding the Fourth Proportional to 28,053.70, 42,056.99 and 12,246.71

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Solution

The fourth proportional to 28,053.70, 42,056.99 and 12,246.71 is: 18,359.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,053.70 : 42,056.99 = 12,246.71 : x
  2. Step 2: Convert to fraction form
    28,053.70/42,056.99 = 12,246.71/x
  3. Step 3: Cross multiply
    28,053.70x = 42,056.99 × 12,246.71
  4. Step 4: Simplify right side
    28,053.70x = 515,059,760.00
  5. Step 5: Solve for x
    x = 515,059,760.00/28,053.70
  6. Step 6: Final answer
    x = 18,359.78

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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.