Home / 20,348.38-28,079.34-13,632.92

Finding the Fourth Proportional to 20,348.38, 28,079.34 and 13,632.92

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Solution

The fourth proportional to 20,348.38, 28,079.34 and 13,632.92 is: 18,812.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.38 : 28,079.34 = 13,632.92 : x
  2. Step 2: Convert to fraction form
    20,348.38/28,079.34 = 13,632.92/x
  3. Step 3: Cross multiply
    20,348.38x = 28,079.34 × 13,632.92
  4. Step 4: Simplify right side
    20,348.38x = 382,803,395.87
  5. Step 5: Solve for x
    x = 382,803,395.87/20,348.38
  6. Step 6: Final answer
    x = 18,812.48

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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.