Home / 22,620.14-31,215.75-12,550.11

Finding the Fourth Proportional to 22,620.14, 31,215.75 and 12,550.11

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Solution

The fourth proportional to 22,620.14, 31,215.75 and 12,550.11 is: 17,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,620.14 : 31,215.75 = 12,550.11 : x
  2. Step 2: Convert to fraction form
    22,620.14/31,215.75 = 12,550.11/x
  3. Step 3: Cross multiply
    22,620.14x = 31,215.75 × 12,550.11
  4. Step 4: Simplify right side
    22,620.14x = 391,761,096.23
  5. Step 5: Solve for x
    x = 391,761,096.23/22,620.14
  6. Step 6: Final answer
    x = 17,319.13

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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.