Home / 11,155.08-15,395.76-8,169.42

Finding the Fourth Proportional to 11,155.08, 15,395.76 and 8,169.42

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Solution

The fourth proportional to 11,155.08, 15,395.76 and 8,169.42 is: 11,275.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.08 : 15,395.76 = 8,169.42 : x
  2. Step 2: Convert to fraction form
    11,155.08/15,395.76 = 8,169.42/x
  3. Step 3: Cross multiply
    11,155.08x = 15,395.76 × 8,169.42
  4. Step 4: Simplify right side
    11,155.08x = 125,774,429.66
  5. Step 5: Solve for x
    x = 125,774,429.66/11,155.08
  6. Step 6: Final answer
    x = 11,275.08

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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.