Home / 13,291.40-19,944.05-8,610.20

Finding the Fourth Proportional to 13,291.40, 19,944.05 and 8,610.20

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Solution

The fourth proportional to 13,291.40, 19,944.05 and 8,610.20 is: 12,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.40 : 19,944.05 = 8,610.20 : x
  2. Step 2: Convert to fraction form
    13,291.40/19,944.05 = 8,610.20/x
  3. Step 3: Cross multiply
    13,291.40x = 19,944.05 × 8,610.20
  4. Step 4: Simplify right side
    13,291.40x = 171,722,116.54
  5. Step 5: Solve for x
    x = 171,722,116.54/13,291.40
  6. Step 6: Final answer
    x = 12,919.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.