Home / 20,499.31-28,289.15-11,546.99

Finding the Fourth Proportional to 20,499.31, 28,289.15 and 11,546.99

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Solution

The fourth proportional to 20,499.31, 28,289.15 and 11,546.99 is: 15,934.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.31 : 28,289.15 = 11,546.99 : x
  2. Step 2: Convert to fraction form
    20,499.31/28,289.15 = 11,546.99/x
  3. Step 3: Cross multiply
    20,499.31x = 28,289.15 × 11,546.99
  4. Step 4: Simplify right side
    20,499.31x = 326,654,482.36
  5. Step 5: Solve for x
    x = 326,654,482.36/20,499.31
  6. Step 6: Final answer
    x = 15,934.90

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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.