Home / 20,901.68-28,844.88-11,470.58

Finding the Fourth Proportional to 20,901.68, 28,844.88 and 11,470.58

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Solution

The fourth proportional to 20,901.68, 28,844.88 and 11,470.58 is: 15,829.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.68 : 28,844.88 = 11,470.58 : x
  2. Step 2: Convert to fraction form
    20,901.68/28,844.88 = 11,470.58/x
  3. Step 3: Cross multiply
    20,901.68x = 28,844.88 × 11,470.58
  4. Step 4: Simplify right side
    20,901.68x = 330,867,503.63
  5. Step 5: Solve for x
    x = 330,867,503.63/20,901.68
  6. Step 6: Final answer
    x = 15,829.71

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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.