Home / 20,499.32-28,291.77-11,548.59

Finding the Fourth Proportional to 20,499.32, 28,291.77 and 11,548.59

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Solution

The fourth proportional to 20,499.32, 28,291.77 and 11,548.59 is: 15,938.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.32 : 28,291.77 = 11,548.59 : x
  2. Step 2: Convert to fraction form
    20,499.32/28,291.77 = 11,548.59/x
  3. Step 3: Cross multiply
    20,499.32x = 28,291.77 × 11,548.59
  4. Step 4: Simplify right side
    20,499.32x = 326,730,052.10
  5. Step 5: Solve for x
    x = 326,730,052.10/20,499.32
  6. Step 6: Final answer
    x = 15,938.58

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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.