Home / 43,170.54-64,755.72-13,590.96

Finding the Fourth Proportional to 43,170.54, 64,755.72 and 13,590.96

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Solution

The fourth proportional to 43,170.54, 64,755.72 and 13,590.96 is: 20,386.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,170.54 : 64,755.72 = 13,590.96 : x
  2. Step 2: Convert to fraction form
    43,170.54/64,755.72 = 13,590.96/x
  3. Step 3: Cross multiply
    43,170.54x = 64,755.72 × 13,590.96
  4. Step 4: Simplify right side
    43,170.54x = 880,092,400.29
  5. Step 5: Solve for x
    x = 880,092,400.29/43,170.54
  6. Step 6: Final answer
    x = 20,386.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.