Home / 15,909.40-23,864.10-12,230.20

Finding the Fourth Proportional to 15,909.40, 23,864.10 and 12,230.20

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Solution

The fourth proportional to 15,909.40, 23,864.10 and 12,230.20 is: 18,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.40 : 23,864.10 = 12,230.20 : x
  2. Step 2: Convert to fraction form
    15,909.40/23,864.10 = 12,230.20/x
  3. Step 3: Cross multiply
    15,909.40x = 23,864.10 × 12,230.20
  4. Step 4: Simplify right side
    15,909.40x = 291,862,715.82
  5. Step 5: Solve for x
    x = 291,862,715.82/15,909.40
  6. Step 6: Final answer
    x = 18,345.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.