Home / 30,630.60-42,269.14-18,713.88

Finding the Fourth Proportional to 30,630.60, 42,269.14 and 18,713.88

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Solution

The fourth proportional to 30,630.60, 42,269.14 and 18,713.88 is: 25,824.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,630.60 : 42,269.14 = 18,713.88 : x
  2. Step 2: Convert to fraction form
    30,630.60/42,269.14 = 18,713.88/x
  3. Step 3: Cross multiply
    30,630.60x = 42,269.14 × 18,713.88
  4. Step 4: Simplify right side
    30,630.60x = 791,019,613.66
  5. Step 5: Solve for x
    x = 791,019,613.66/30,630.60
  6. Step 6: Final answer
    x = 25,824.49

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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.