Home / 30,753.85-42,442.15-18,819.52

Finding the Fourth Proportional to 30,753.85, 42,442.15 and 18,819.52

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Solution

The fourth proportional to 30,753.85, 42,442.15 and 18,819.52 is: 25,972.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,753.85 : 42,442.15 = 18,819.52 : x
  2. Step 2: Convert to fraction form
    30,753.85/42,442.15 = 18,819.52/x
  3. Step 3: Cross multiply
    30,753.85x = 42,442.15 × 18,819.52
  4. Step 4: Simplify right side
    30,753.85x = 798,740,890.77
  5. Step 5: Solve for x
    x = 798,740,890.77/30,753.85
  6. Step 6: Final answer
    x = 25,972.06

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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.