Home / 20,717.65-28,592.42-12,650.86

Finding the Fourth Proportional to 20,717.65, 28,592.42 and 12,650.86

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Solution

The fourth proportional to 20,717.65, 28,592.42 and 12,650.86 is: 17,459.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.65 : 28,592.42 = 12,650.86 : x
  2. Step 2: Convert to fraction form
    20,717.65/28,592.42 = 12,650.86/x
  3. Step 3: Cross multiply
    20,717.65x = 28,592.42 × 12,650.86
  4. Step 4: Simplify right side
    20,717.65x = 361,718,496.26
  5. Step 5: Solve for x
    x = 361,718,496.26/20,717.65
  6. Step 6: Final answer
    x = 17,459.44

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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.