Home / 31,650.30-43,670.28-18,901.17

Finding the Fourth Proportional to 31,650.30, 43,670.28 and 18,901.17

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Solution

The fourth proportional to 31,650.30, 43,670.28 and 18,901.17 is: 26,079.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,650.30 : 43,670.28 = 18,901.17 : x
  2. Step 2: Convert to fraction form
    31,650.30/43,670.28 = 18,901.17/x
  3. Step 3: Cross multiply
    31,650.30x = 43,670.28 × 18,901.17
  4. Step 4: Simplify right side
    31,650.30x = 825,419,386.23
  5. Step 5: Solve for x
    x = 825,419,386.23/31,650.30
  6. Step 6: Final answer
    x = 26,079.35

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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.