Home / 84,004.50-126,009.18-21,675

Finding the Fourth Proportional to 84,004.50, 126,009.18 and 21,675

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Solution

The fourth proportional to 84,004.50, 126,009.18 and 21,675 is: 32,513.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,004.50 : 126,009.18 = 21,675 : x
  2. Step 2: Convert to fraction form
    84,004.50/126,009.18 = 21,675/x
  3. Step 3: Cross multiply
    84,004.50x = 126,009.18 × 21,675
  4. Step 4: Simplify right side
    84,004.50x = 2,731,248,976.50
  5. Step 5: Solve for x
    x = 2,731,248,976.50/84,004.50
  6. Step 6: Final answer
    x = 32,513.13

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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.