Home / 30,909.12-42,657.24-25,864.44

Finding the Fourth Proportional to 30,909.12, 42,657.24 and 25,864.44

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Solution

The fourth proportional to 30,909.12, 42,657.24 and 25,864.44 is: 35,695.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,909.12 : 42,657.24 = 25,864.44 : x
  2. Step 2: Convert to fraction form
    30,909.12/42,657.24 = 25,864.44/x
  3. Step 3: Cross multiply
    30,909.12x = 42,657.24 × 25,864.44
  4. Step 4: Simplify right side
    30,909.12x = 1,103,305,624.55
  5. Step 5: Solve for x
    x = 1,103,305,624.55/30,909.12
  6. Step 6: Final answer
    x = 35,695.15

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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.