Home / 20,923.20-28,882.24-12,538.08

Finding the Fourth Proportional to 20,923.20, 28,882.24 and 12,538.08

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Solution

The fourth proportional to 20,923.20, 28,882.24 and 12,538.08 is: 17,307.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.20 : 28,882.24 = 12,538.08 : x
  2. Step 2: Convert to fraction form
    20,923.20/28,882.24 = 12,538.08/x
  3. Step 3: Cross multiply
    20,923.20x = 28,882.24 × 12,538.08
  4. Step 4: Simplify right side
    20,923.20x = 362,127,835.70
  5. Step 5: Solve for x
    x = 362,127,835.70/20,923.20
  6. Step 6: Final answer
    x = 17,307.48

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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.