Home / 31,588.88-47,382.66-12,868.16

Finding the Fourth Proportional to 31,588.88, 47,382.66 and 12,868.16

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Solution

The fourth proportional to 31,588.88, 47,382.66 and 12,868.16 is: 19,301.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,588.88 : 47,382.66 = 12,868.16 : x
  2. Step 2: Convert to fraction form
    31,588.88/47,382.66 = 12,868.16/x
  3. Step 3: Cross multiply
    31,588.88x = 47,382.66 × 12,868.16
  4. Step 4: Simplify right side
    31,588.88x = 609,727,650.11
  5. Step 5: Solve for x
    x = 609,727,650.11/31,588.88
  6. Step 6: Final answer
    x = 19,301.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.