Home / 11,130.12-15,359.04-6,414.48

Finding the Fourth Proportional to 11,130.12, 15,359.04 and 6,414.48

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Solution

The fourth proportional to 11,130.12, 15,359.04 and 6,414.48 is: 8,851.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.12 : 15,359.04 = 6,414.48 : x
  2. Step 2: Convert to fraction form
    11,130.12/15,359.04 = 6,414.48/x
  3. Step 3: Cross multiply
    11,130.12x = 15,359.04 × 6,414.48
  4. Step 4: Simplify right side
    11,130.12x = 98,520,254.90
  5. Step 5: Solve for x
    x = 98,520,254.90/11,130.12
  6. Step 6: Final answer
    x = 8,851.68

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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.