Home / 11,130.08-15,375.52-8,889.02

Finding the Fourth Proportional to 11,130.08, 15,375.52 and 8,889.02

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Solution

The fourth proportional to 11,130.08, 15,375.52 and 8,889.02 is: 12,279.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.08 : 15,375.52 = 8,889.02 : x
  2. Step 2: Convert to fraction form
    11,130.08/15,375.52 = 8,889.02/x
  3. Step 3: Cross multiply
    11,130.08x = 15,375.52 × 8,889.02
  4. Step 4: Simplify right side
    11,130.08x = 136,673,304.79
  5. Step 5: Solve for x
    x = 136,673,304.79/11,130.08
  6. Step 6: Final answer
    x = 12,279.63

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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.