Home / 30,819.60-42,531-16,672.44

Finding the Fourth Proportional to 30,819.60, 42,531 and 16,672.44

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Solution

The fourth proportional to 30,819.60, 42,531 and 16,672.44 is: 23,007.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,819.60 : 42,531 = 16,672.44 : x
  2. Step 2: Convert to fraction form
    30,819.60/42,531 = 16,672.44/x
  3. Step 3: Cross multiply
    30,819.60x = 42,531 × 16,672.44
  4. Step 4: Simplify right side
    30,819.60x = 709,095,545.64
  5. Step 5: Solve for x
    x = 709,095,545.64/30,819.60
  6. Step 6: Final answer
    x = 23,007.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.