Home / 20,901.18-28,843.63-11,948.88

Finding the Fourth Proportional to 20,901.18, 28,843.63 and 11,948.88

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Solution

The fourth proportional to 20,901.18, 28,843.63 and 11,948.88 is: 16,489.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.18 : 28,843.63 = 11,948.88 : x
  2. Step 2: Convert to fraction form
    20,901.18/28,843.63 = 11,948.88/x
  3. Step 3: Cross multiply
    20,901.18x = 28,843.63 × 11,948.88
  4. Step 4: Simplify right side
    20,901.18x = 344,649,073.63
  5. Step 5: Solve for x
    x = 344,649,073.63/20,901.18
  6. Step 6: Final answer
    x = 16,489.46

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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.