Home / 20,368.46-28,147.06-15,323.92

Finding the Fourth Proportional to 20,368.46, 28,147.06 and 15,323.92

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Solution

The fourth proportional to 20,368.46, 28,147.06 and 15,323.92 is: 21,176.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.46 : 28,147.06 = 15,323.92 : x
  2. Step 2: Convert to fraction form
    20,368.46/28,147.06 = 15,323.92/x
  3. Step 3: Cross multiply
    20,368.46x = 28,147.06 × 15,323.92
  4. Step 4: Simplify right side
    20,368.46x = 431,323,295.68
  5. Step 5: Solve for x
    x = 431,323,295.68/20,368.46
  6. Step 6: Final answer
    x = 21,176.04

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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.