Home / 31,549.18-43,537.56-18,124.64

Finding the Fourth Proportional to 31,549.18, 43,537.56 and 18,124.64

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Solution

The fourth proportional to 31,549.18, 43,537.56 and 18,124.64 is: 25,011.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,549.18 : 43,537.56 = 18,124.64 : x
  2. Step 2: Convert to fraction form
    31,549.18/43,537.56 = 18,124.64/x
  3. Step 3: Cross multiply
    31,549.18x = 43,537.56 × 18,124.64
  4. Step 4: Simplify right side
    31,549.18x = 789,102,601.48
  5. Step 5: Solve for x
    x = 789,102,601.48/31,549.18
  6. Step 6: Final answer
    x = 25,011.83

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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.