Home / 22,641.88-31,240.92-13,687.60

Finding the Fourth Proportional to 22,641.88, 31,240.92 and 13,687.60

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Solution

The fourth proportional to 22,641.88, 31,240.92 and 13,687.60 is: 18,885.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,641.88 : 31,240.92 = 13,687.60 : x
  2. Step 2: Convert to fraction form
    22,641.88/31,240.92 = 13,687.60/x
  3. Step 3: Cross multiply
    22,641.88x = 31,240.92 × 13,687.60
  4. Step 4: Simplify right side
    22,641.88x = 427,613,216.59
  5. Step 5: Solve for x
    x = 427,613,216.59/22,641.88
  6. Step 6: Final answer
    x = 18,885.94

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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.