Home / 30,909.72-42,655.80-17,481.12

Finding the Fourth Proportional to 30,909.72, 42,655.80 and 17,481.12

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Solution

The fourth proportional to 30,909.72, 42,655.80 and 17,481.12 is: 24,124.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,909.72 : 42,655.80 = 17,481.12 : x
  2. Step 2: Convert to fraction form
    30,909.72/42,655.80 = 17,481.12/x
  3. Step 3: Cross multiply
    30,909.72x = 42,655.80 × 17,481.12
  4. Step 4: Simplify right side
    30,909.72x = 745,671,158.50
  5. Step 5: Solve for x
    x = 745,671,158.50/30,909.72
  6. Step 6: Final answer
    x = 24,124.16

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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.