Home / 31,531.02-43,508.07-18,102.84

Finding the Fourth Proportional to 31,531.02, 43,508.07 and 18,102.84

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Solution

The fourth proportional to 31,531.02, 43,508.07 and 18,102.84 is: 24,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,531.02 : 43,508.07 = 18,102.84 : x
  2. Step 2: Convert to fraction form
    31,531.02/43,508.07 = 18,102.84/x
  3. Step 3: Cross multiply
    31,531.02x = 43,508.07 × 18,102.84
  4. Step 4: Simplify right side
    31,531.02x = 787,619,629.92
  5. Step 5: Solve for x
    x = 787,619,629.92/31,531.02
  6. Step 6: Final answer
    x = 24,979.20

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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.