Home / 30,753.86-42,442.16-18,819.52

Finding the Fourth Proportional to 30,753.86, 42,442.16 and 18,819.52

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Solution

The fourth proportional to 30,753.86, 42,442.16 and 18,819.52 is: 25,972.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,753.86 : 42,442.16 = 18,819.52 : x
  2. Step 2: Convert to fraction form
    30,753.86/42,442.16 = 18,819.52/x
  3. Step 3: Cross multiply
    30,753.86x = 42,442.16 × 18,819.52
  4. Step 4: Simplify right side
    30,753.86x = 798,740,772.65
  5. Step 5: Solve for x
    x = 798,740,772.65/30,753.86
  6. Step 6: Final answer
    x = 25,972.05

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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.