Home / 11,390.62-15,719.45-6,610.20

Finding the Fourth Proportional to 11,390.62, 15,719.45 and 6,610.20

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Solution

The fourth proportional to 11,390.62, 15,719.45 and 6,610.20 is: 9,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.62 : 15,719.45 = 6,610.20 : x
  2. Step 2: Convert to fraction form
    11,390.62/15,719.45 = 6,610.20/x
  3. Step 3: Cross multiply
    11,390.62x = 15,719.45 × 6,610.20
  4. Step 4: Simplify right side
    11,390.62x = 103,908,708.39
  5. Step 5: Solve for x
    x = 103,908,708.39/11,390.62
  6. Step 6: Final answer
    x = 9,122.30

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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.