Home / 42,971.14-64,456.70-13,391.36

Finding the Fourth Proportional to 42,971.14, 64,456.70 and 13,391.36

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Solution

The fourth proportional to 42,971.14, 64,456.70 and 13,391.36 is: 20,087.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,971.14 : 64,456.70 = 13,391.36 : x
  2. Step 2: Convert to fraction form
    42,971.14/64,456.70 = 13,391.36/x
  3. Step 3: Cross multiply
    42,971.14x = 64,456.70 × 13,391.36
  4. Step 4: Simplify right side
    42,971.14x = 863,162,874.11
  5. Step 5: Solve for x
    x = 863,162,874.11/42,971.14
  6. Step 6: Final answer
    x = 20,087.04

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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.