Home / 30,909.30-42,654.60-16,762.12

Finding the Fourth Proportional to 30,909.30, 42,654.60 and 16,762.12

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Solution

The fourth proportional to 30,909.30, 42,654.60 and 16,762.12 is: 23,131.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,909.30 : 42,654.60 = 16,762.12 : x
  2. Step 2: Convert to fraction form
    30,909.30/42,654.60 = 16,762.12/x
  3. Step 3: Cross multiply
    30,909.30x = 42,654.60 × 16,762.12
  4. Step 4: Simplify right side
    30,909.30x = 714,981,523.75
  5. Step 5: Solve for x
    x = 714,981,523.75/30,909.30
  6. Step 6: Final answer
    x = 23,131.60

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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.