Home / 11,135.10-15,359.04-7,161.24

Finding the Fourth Proportional to 11,135.10, 15,359.04 and 7,161.24

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Solution

The fourth proportional to 11,135.10, 15,359.04 and 7,161.24 is: 9,877.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.10 : 15,359.04 = 7,161.24 : x
  2. Step 2: Convert to fraction form
    11,135.10/15,359.04 = 7,161.24/x
  3. Step 3: Cross multiply
    11,135.10x = 15,359.04 × 7,161.24
  4. Step 4: Simplify right side
    11,135.10x = 109,989,771.61
  5. Step 5: Solve for x
    x = 109,989,771.61/11,135.10
  6. Step 6: Final answer
    x = 9,877.75

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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.