Home / 31,217.86-43,077.12-18,471.44

Finding the Fourth Proportional to 31,217.86, 43,077.12 and 18,471.44

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Solution

The fourth proportional to 31,217.86, 43,077.12 and 18,471.44 is: 25,488.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,217.86 : 43,077.12 = 18,471.44 : x
  2. Step 2: Convert to fraction form
    31,217.86/43,077.12 = 18,471.44/x
  3. Step 3: Cross multiply
    31,217.86x = 43,077.12 × 18,471.44
  4. Step 4: Simplify right side
    31,217.86x = 795,696,437.45
  5. Step 5: Solve for x
    x = 795,696,437.45/31,217.86
  6. Step 6: Final answer
    x = 25,488.50

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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.