Home / 11,147.40-15,378.10-6,670.24

Finding the Fourth Proportional to 11,147.40, 15,378.10 and 6,670.24

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Solution

The fourth proportional to 11,147.40, 15,378.10 and 6,670.24 is: 9,201.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.40 : 15,378.10 = 6,670.24 : x
  2. Step 2: Convert to fraction form
    11,147.40/15,378.10 = 6,670.24/x
  3. Step 3: Cross multiply
    11,147.40x = 15,378.10 × 6,670.24
  4. Step 4: Simplify right side
    11,147.40x = 102,575,617.74
  5. Step 5: Solve for x
    x = 102,575,617.74/11,147.40
  6. Step 6: Final answer
    x = 9,201.75

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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.