Home / 12,442.79-17,170.87-7,065.18

Finding the Fourth Proportional to 12,442.79, 17,170.87 and 7,065.18

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Solution

The fourth proportional to 12,442.79, 17,170.87 and 7,065.18 is: 9,749.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,442.79 : 17,170.87 = 7,065.18 : x
  2. Step 2: Convert to fraction form
    12,442.79/17,170.87 = 7,065.18/x
  3. Step 3: Cross multiply
    12,442.79x = 17,170.87 × 7,065.18
  4. Step 4: Simplify right side
    12,442.79x = 121,315,287.31
  5. Step 5: Solve for x
    x = 121,315,287.31/12,442.79
  6. Step 6: Final answer
    x = 9,749.85

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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.