Home / 20,473.74-28,252.58-11,520.70

Finding the Fourth Proportional to 20,473.74, 28,252.58 and 11,520.70

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Solution

The fourth proportional to 20,473.74, 28,252.58 and 11,520.70 is: 15,897.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.74 : 28,252.58 = 11,520.70 : x
  2. Step 2: Convert to fraction form
    20,473.74/28,252.58 = 11,520.70/x
  3. Step 3: Cross multiply
    20,473.74x = 28,252.58 × 11,520.70
  4. Step 4: Simplify right side
    20,473.74x = 325,489,498.41
  5. Step 5: Solve for x
    x = 325,489,498.41/20,473.74
  6. Step 6: Final answer
    x = 15,897.90

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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.