Home / 20,109.13-27,746.55-12,151.80

Finding the Fourth Proportional to 20,109.13, 27,746.55 and 12,151.80

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Solution

The fourth proportional to 20,109.13, 27,746.55 and 12,151.80 is: 16,767.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.13 : 27,746.55 = 12,151.80 : x
  2. Step 2: Convert to fraction form
    20,109.13/27,746.55 = 12,151.80/x
  3. Step 3: Cross multiply
    20,109.13x = 27,746.55 × 12,151.80
  4. Step 4: Simplify right side
    20,109.13x = 337,170,526.29
  5. Step 5: Solve for x
    x = 337,170,526.29/20,109.13
  6. Step 6: Final answer
    x = 16,767.04

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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.