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Finding the Fourth Proportional to 28,473.59, 42,703.00 and 8,478.41

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Solution

The fourth proportional to 28,473.59, 42,703.00 and 8,478.41 is: 12,715.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.59 : 42,703.00 = 8,478.41 : x
  2. Step 2: Convert to fraction form
    28,473.59/42,703.00 = 8,478.41/x
  3. Step 3: Cross multiply
    28,473.59x = 42,703.00 × 8,478.41
  4. Step 4: Simplify right side
    28,473.59x = 362,053,307.52
  5. Step 5: Solve for x
    x = 362,053,307.52/28,473.59
  6. Step 6: Final answer
    x = 12,715.41

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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.