Home / 31,435.74-43,381.84-18,008.16

Finding the Fourth Proportional to 31,435.74, 43,381.84 and 18,008.16

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Solution

The fourth proportional to 31,435.74, 43,381.84 and 18,008.16 is: 24,851.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,435.74 : 43,381.84 = 18,008.16 : x
  2. Step 2: Convert to fraction form
    31,435.74/43,381.84 = 18,008.16/x
  3. Step 3: Cross multiply
    31,435.74x = 43,381.84 × 18,008.16
  4. Step 4: Simplify right side
    31,435.74x = 781,227,115.81
  5. Step 5: Solve for x
    x = 781,227,115.81/31,435.74
  6. Step 6: Final answer
    x = 24,851.56

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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.