Home / 20,552.16-28,358.88-12,994.80

Finding the Fourth Proportional to 20,552.16, 28,358.88 and 12,994.80

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Solution

The fourth proportional to 20,552.16, 28,358.88 and 12,994.80 is: 17,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.16 : 28,358.88 = 12,994.80 : x
  2. Step 2: Convert to fraction form
    20,552.16/28,358.88 = 12,994.80/x
  3. Step 3: Cross multiply
    20,552.16x = 28,358.88 × 12,994.80
  4. Step 4: Simplify right side
    20,552.16x = 368,517,973.82
  5. Step 5: Solve for x
    x = 368,517,973.82/20,552.16
  6. Step 6: Final answer
    x = 17,930.86

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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.