Home / 21,395.28-32,079.24-10,279.84

Finding the Fourth Proportional to 21,395.28, 32,079.24 and 10,279.84

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Solution

The fourth proportional to 21,395.28, 32,079.24 and 10,279.84 is: 15,413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,395.28 : 32,079.24 = 10,279.84 : x
  2. Step 2: Convert to fraction form
    21,395.28/32,079.24 = 10,279.84/x
  3. Step 3: Cross multiply
    21,395.28x = 32,079.24 × 10,279.84
  4. Step 4: Simplify right side
    21,395.28x = 329,769,454.52
  5. Step 5: Solve for x
    x = 329,769,454.52/21,395.28
  6. Step 6: Final answer
    x = 15,413.19

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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.