Home / 30,864.92-42,591.38-18,118.62

Finding the Fourth Proportional to 30,864.92, 42,591.38 and 18,118.62

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Solution

The fourth proportional to 30,864.92, 42,591.38 and 18,118.62 is: 25,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,864.92 : 42,591.38 = 18,118.62 : x
  2. Step 2: Convert to fraction form
    30,864.92/42,591.38 = 18,118.62/x
  3. Step 3: Cross multiply
    30,864.92x = 42,591.38 × 18,118.62
  4. Step 4: Simplify right side
    30,864.92x = 771,696,938.90
  5. Step 5: Solve for x
    x = 771,696,938.90/30,864.92
  6. Step 6: Final answer
    x = 25,002.40

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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.