Home / 30,520.24-42,115.80-17,089.18

Finding the Fourth Proportional to 30,520.24, 42,115.80 and 17,089.18

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Solution

The fourth proportional to 30,520.24, 42,115.80 and 17,089.18 is: 23,581.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,520.24 : 42,115.80 = 17,089.18 : x
  2. Step 2: Convert to fraction form
    30,520.24/42,115.80 = 17,089.18/x
  3. Step 3: Cross multiply
    30,520.24x = 42,115.80 × 17,089.18
  4. Step 4: Simplify right side
    30,520.24x = 719,724,487.04
  5. Step 5: Solve for x
    x = 719,724,487.04/30,520.24
  6. Step 6: Final answer
    x = 23,581.88

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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.