Home / 28,200.62-38,896.17-20,251.01

Finding the Fourth Proportional to 28,200.62, 38,896.17 and 20,251.01

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Solution

The fourth proportional to 28,200.62, 38,896.17 and 20,251.01 is: 27,931.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.62 : 38,896.17 = 20,251.01 : x
  2. Step 2: Convert to fraction form
    28,200.62/38,896.17 = 20,251.01/x
  3. Step 3: Cross multiply
    28,200.62x = 38,896.17 × 20,251.01
  4. Step 4: Simplify right side
    28,200.62x = 787,686,748.93
  5. Step 5: Solve for x
    x = 787,686,748.93/28,200.62
  6. Step 6: Final answer
    x = 27,931.54

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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.