Home / 30,909.04-42,654.45-16,761.82

Finding the Fourth Proportional to 30,909.04, 42,654.45 and 16,761.82

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Solution

The fourth proportional to 30,909.04, 42,654.45 and 16,761.82 is: 23,131.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,909.04 : 42,654.45 = 16,761.82 : x
  2. Step 2: Convert to fraction form
    30,909.04/42,654.45 = 16,761.82/x
  3. Step 3: Cross multiply
    30,909.04x = 42,654.45 × 16,761.82
  4. Step 4: Simplify right side
    30,909.04x = 714,966,213.10
  5. Step 5: Solve for x
    x = 714,966,213.10/30,909.04
  6. Step 6: Final answer
    x = 23,131.30

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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.