Home / 20,508.18-28,300.95-11,556.60

Finding the Fourth Proportional to 20,508.18, 28,300.95 and 11,556.60

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Solution

The fourth proportional to 20,508.18, 28,300.95 and 11,556.60 is: 15,947.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.18 : 28,300.95 = 11,556.60 : x
  2. Step 2: Convert to fraction form
    20,508.18/28,300.95 = 11,556.60/x
  3. Step 3: Cross multiply
    20,508.18x = 28,300.95 × 11,556.60
  4. Step 4: Simplify right side
    20,508.18x = 327,062,758.77
  5. Step 5: Solve for x
    x = 327,062,758.77/20,508.18
  6. Step 6: Final answer
    x = 15,947.92

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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.