Home / 20,508.60-28,301.28-11,555.94

Finding the Fourth Proportional to 20,508.60, 28,301.28 and 11,555.94

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Solution

The fourth proportional to 20,508.60, 28,301.28 and 11,555.94 is: 15,946.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.60 : 28,301.28 = 11,555.94 : x
  2. Step 2: Convert to fraction form
    20,508.60/28,301.28 = 11,555.94/x
  3. Step 3: Cross multiply
    20,508.60x = 28,301.28 × 11,555.94
  4. Step 4: Simplify right side
    20,508.60x = 327,047,893.60
  5. Step 5: Solve for x
    x = 327,047,893.60/20,508.60
  6. Step 6: Final answer
    x = 15,946.87

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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.