Home / 31,318.18-43,218.19-17,889.15

Finding the Fourth Proportional to 31,318.18, 43,218.19 and 17,889.15

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Solution

The fourth proportional to 31,318.18, 43,218.19 and 17,889.15 is: 24,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,318.18 : 43,218.19 = 17,889.15 : x
  2. Step 2: Convert to fraction form
    31,318.18/43,218.19 = 17,889.15/x
  3. Step 3: Cross multiply
    31,318.18x = 43,218.19 × 17,889.15
  4. Step 4: Simplify right side
    31,318.18x = 773,136,868.07
  5. Step 5: Solve for x
    x = 773,136,868.07/31,318.18
  6. Step 6: Final answer
    x = 24,686.52

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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.