Home / 11,445.60-17,139.60-7,528.80

Finding the Fourth Proportional to 11,445.60, 17,139.60 and 7,528.80

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Solution

The fourth proportional to 11,445.60, 17,139.60 and 7,528.80 is: 11,274.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,445.60 : 17,139.60 = 7,528.80 : x
  2. Step 2: Convert to fraction form
    11,445.60/17,139.60 = 7,528.80/x
  3. Step 3: Cross multiply
    11,445.60x = 17,139.60 × 7,528.80
  4. Step 4: Simplify right side
    11,445.60x = 129,040,620.48
  5. Step 5: Solve for x
    x = 129,040,620.48/11,445.60
  6. Step 6: Final answer
    x = 11,274.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.