Home / 22,620.78-31,216.86-12,549.87

Finding the Fourth Proportional to 22,620.78, 31,216.86 and 12,549.87

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Solution

The fourth proportional to 22,620.78, 31,216.86 and 12,549.87 is: 17,318.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,620.78 : 31,216.86 = 12,549.87 : x
  2. Step 2: Convert to fraction form
    22,620.78/31,216.86 = 12,549.87/x
  3. Step 3: Cross multiply
    22,620.78x = 31,216.86 × 12,549.87
  4. Step 4: Simplify right side
    22,620.78x = 391,767,534.81
  5. Step 5: Solve for x
    x = 391,767,534.81/22,620.78
  6. Step 6: Final answer
    x = 17,318.92

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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.