Home / 11,148.10-15,394.79-7,176.20

Finding the Fourth Proportional to 11,148.10, 15,394.79 and 7,176.20

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Solution

The fourth proportional to 11,148.10, 15,394.79 and 7,176.20 is: 9,909.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.10 : 15,394.79 = 7,176.20 : x
  2. Step 2: Convert to fraction form
    11,148.10/15,394.79 = 7,176.20/x
  3. Step 3: Cross multiply
    11,148.10x = 15,394.79 × 7,176.20
  4. Step 4: Simplify right side
    11,148.10x = 110,476,032.96
  5. Step 5: Solve for x
    x = 110,476,032.96/11,148.10
  6. Step 6: Final answer
    x = 9,909.86

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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.