Home / 20,923.76-28,876.56-11,494.28

Finding the Fourth Proportional to 20,923.76, 28,876.56 and 11,494.28

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Solution

The fourth proportional to 20,923.76, 28,876.56 and 11,494.28 is: 15,863.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.76 : 28,876.56 = 11,494.28 : x
  2. Step 2: Convert to fraction form
    20,923.76/28,876.56 = 11,494.28/x
  3. Step 3: Cross multiply
    20,923.76x = 28,876.56 × 11,494.28
  4. Step 4: Simplify right side
    20,923.76x = 331,915,266.08
  5. Step 5: Solve for x
    x = 331,915,266.08/20,923.76
  6. Step 6: Final answer
    x = 15,863.08

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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.