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Finding the Fourth Proportional to 28,038.52, 42,053.46 and 8,318.80

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Solution

The fourth proportional to 28,038.52, 42,053.46 and 8,318.80 is: 12,476.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,038.52 : 42,053.46 = 8,318.80 : x
  2. Step 2: Convert to fraction form
    28,038.52/42,053.46 = 8,318.80/x
  3. Step 3: Cross multiply
    28,038.52x = 42,053.46 × 8,318.80
  4. Step 4: Simplify right side
    28,038.52x = 349,834,323.05
  5. Step 5: Solve for x
    x = 349,834,323.05/28,038.52
  6. Step 6: Final answer
    x = 12,476.92

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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.