Home / 22,045.13-30,421.68-12,613.09

Finding the Fourth Proportional to 22,045.13, 30,421.68 and 12,613.09

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Solution

The fourth proportional to 22,045.13, 30,421.68 and 12,613.09 is: 17,405.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,045.13 : 30,421.68 = 12,613.09 : x
  2. Step 2: Convert to fraction form
    22,045.13/30,421.68 = 12,613.09/x
  3. Step 3: Cross multiply
    22,045.13x = 30,421.68 × 12,613.09
  4. Step 4: Simplify right side
    22,045.13x = 383,711,387.79
  5. Step 5: Solve for x
    x = 383,711,387.79/22,045.13
  6. Step 6: Final answer
    x = 17,405.72

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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.