Home / 20,309.00-28,029.04-13,255.92

Finding the Fourth Proportional to 20,309.00, 28,029.04 and 13,255.92

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Solution

The fourth proportional to 20,309.00, 28,029.04 and 13,255.92 is: 18,294.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.00 : 28,029.04 = 13,255.92 : x
  2. Step 2: Convert to fraction form
    20,309.00/28,029.04 = 13,255.92/x
  3. Step 3: Cross multiply
    20,309.00x = 28,029.04 × 13,255.92
  4. Step 4: Simplify right side
    20,309.00x = 371,550,678.78
  5. Step 5: Solve for x
    x = 371,550,678.78/20,309.00
  6. Step 6: Final answer
    x = 18,294.88

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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.