Home / 11,541.42-15,921.60-7,560.78

Finding the Fourth Proportional to 11,541.42, 15,921.60 and 7,560.78

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Solution

The fourth proportional to 11,541.42, 15,921.60 and 7,560.78 is: 10,430.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,541.42 : 15,921.60 = 7,560.78 : x
  2. Step 2: Convert to fraction form
    11,541.42/15,921.60 = 7,560.78/x
  3. Step 3: Cross multiply
    11,541.42x = 15,921.60 × 7,560.78
  4. Step 4: Simplify right side
    11,541.42x = 120,379,714.85
  5. Step 5: Solve for x
    x = 120,379,714.85/11,541.42
  6. Step 6: Final answer
    x = 10,430.23

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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.