Home / 31,813.48-43,909.05-18,385.30

Finding the Fourth Proportional to 31,813.48, 43,909.05 and 18,385.30

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Solution

The fourth proportional to 31,813.48, 43,909.05 and 18,385.30 is: 25,375.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,813.48 : 43,909.05 = 18,385.30 : x
  2. Step 2: Convert to fraction form
    31,813.48/43,909.05 = 18,385.30/x
  3. Step 3: Cross multiply
    31,813.48x = 43,909.05 × 18,385.30
  4. Step 4: Simplify right side
    31,813.48x = 807,281,056.97
  5. Step 5: Solve for x
    x = 807,281,056.97/31,813.48
  6. Step 6: Final answer
    x = 25,375.44

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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.