Home / 13,320.42-19,974.15-7,775.57

Finding the Fourth Proportional to 13,320.42, 19,974.15 and 7,775.57

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Solution

The fourth proportional to 13,320.42, 19,974.15 and 7,775.57 is: 11,659.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.42 : 19,974.15 = 7,775.57 : x
  2. Step 2: Convert to fraction form
    13,320.42/19,974.15 = 7,775.57/x
  3. Step 3: Cross multiply
    13,320.42x = 19,974.15 × 7,775.57
  4. Step 4: Simplify right side
    13,320.42x = 155,310,301.64
  5. Step 5: Solve for x
    x = 155,310,301.64/13,320.42
  6. Step 6: Final answer
    x = 11,659.56

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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.