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Finding the Fourth Proportional to 22,710.80, 31,314.09 and 15,544.17

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Solution

The fourth proportional to 22,710.80, 31,314.09 and 15,544.17 is: 21,432.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,710.80 : 31,314.09 = 15,544.17 : x
  2. Step 2: Convert to fraction form
    22,710.80/31,314.09 = 15,544.17/x
  3. Step 3: Cross multiply
    22,710.80x = 31,314.09 × 15,544.17
  4. Step 4: Simplify right side
    22,710.80x = 486,751,596.65
  5. Step 5: Solve for x
    x = 486,751,596.65/22,710.80
  6. Step 6: Final answer
    x = 21,432.60

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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.