Home / 20,429.72-28,180.02-17,017.88

Finding the Fourth Proportional to 20,429.72, 28,180.02 and 17,017.88

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Solution

The fourth proportional to 20,429.72, 28,180.02 and 17,017.88 is: 23,473.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.72 : 28,180.02 = 17,017.88 : x
  2. Step 2: Convert to fraction form
    20,429.72/28,180.02 = 17,017.88/x
  3. Step 3: Cross multiply
    20,429.72x = 28,180.02 × 17,017.88
  4. Step 4: Simplify right side
    20,429.72x = 479,564,198.76
  5. Step 5: Solve for x
    x = 479,564,198.76/20,429.72
  6. Step 6: Final answer
    x = 23,473.85

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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.