Home / 31,368.30-43,279.84-18,610.88

Finding the Fourth Proportional to 31,368.30, 43,279.84 and 18,610.88

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Solution

The fourth proportional to 31,368.30, 43,279.84 and 18,610.88 is: 25,678.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,368.30 : 43,279.84 = 18,610.88 : x
  2. Step 2: Convert to fraction form
    31,368.30/43,279.84 = 18,610.88/x
  3. Step 3: Cross multiply
    31,368.30x = 43,279.84 × 18,610.88
  4. Step 4: Simplify right side
    31,368.30x = 805,475,908.66
  5. Step 5: Solve for x
    x = 805,475,908.66/31,368.30
  6. Step 6: Final answer
    x = 25,678.02

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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.