Home / 20,484.78-28,238.28-16,702.14

Finding the Fourth Proportional to 20,484.78, 28,238.28 and 16,702.14

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Solution

The fourth proportional to 20,484.78, 28,238.28 and 16,702.14 is: 23,023.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.78 : 28,238.28 = 16,702.14 : x
  2. Step 2: Convert to fraction form
    20,484.78/28,238.28 = 16,702.14/x
  3. Step 3: Cross multiply
    20,484.78x = 28,238.28 × 16,702.14
  4. Step 4: Simplify right side
    20,484.78x = 471,639,705.92
  5. Step 5: Solve for x
    x = 471,639,705.92/20,484.78
  6. Step 6: Final answer
    x = 23,023.91

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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.