Home / 22,591.90-31,176.84-12,520.36

Finding the Fourth Proportional to 22,591.90, 31,176.84 and 12,520.36

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Solution

The fourth proportional to 22,591.90, 31,176.84 and 12,520.36 is: 17,278.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,591.90 : 31,176.84 = 12,520.36 : x
  2. Step 2: Convert to fraction form
    22,591.90/31,176.84 = 12,520.36/x
  3. Step 3: Cross multiply
    22,591.90x = 31,176.84 × 12,520.36
  4. Step 4: Simplify right side
    22,591.90x = 390,345,260.46
  5. Step 5: Solve for x
    x = 390,345,260.46/22,591.90
  6. Step 6: Final answer
    x = 17,278.11

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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.