Home / 20,454.69-28,228.95-12,498.43

Finding the Fourth Proportional to 20,454.69, 28,228.95 and 12,498.43

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Solution

The fourth proportional to 20,454.69, 28,228.95 and 12,498.43 is: 17,248.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.69 : 28,228.95 = 12,498.43 : x
  2. Step 2: Convert to fraction form
    20,454.69/28,228.95 = 12,498.43/x
  3. Step 3: Cross multiply
    20,454.69x = 28,228.95 × 12,498.43
  4. Step 4: Simplify right side
    20,454.69x = 352,817,555.55
  5. Step 5: Solve for x
    x = 352,817,555.55/20,454.69
  6. Step 6: Final answer
    x = 17,248.74

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Half scale
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Double scale
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Similar ratio
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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.