Home / 31,423.20-43,363.68-18,855.04

Finding the Fourth Proportional to 31,423.20, 43,363.68 and 18,855.04

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Solution

The fourth proportional to 31,423.20, 43,363.68 and 18,855.04 is: 26,019.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,423.20 : 43,363.68 = 18,855.04 : x
  2. Step 2: Convert to fraction form
    31,423.20/43,363.68 = 18,855.04/x
  3. Step 3: Cross multiply
    31,423.20x = 43,363.68 × 18,855.04
  4. Step 4: Simplify right side
    31,423.20x = 817,623,920.95
  5. Step 5: Solve for x
    x = 817,623,920.95/31,423.20
  6. Step 6: Final answer
    x = 26,019.75

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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.