Home / 13,442.90-18,551.22-7,475.18

Finding the Fourth Proportional to 13,442.90, 18,551.22 and 7,475.18

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Solution

The fourth proportional to 13,442.90, 18,551.22 and 7,475.18 is: 10,315.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.90 : 18,551.22 = 7,475.18 : x
  2. Step 2: Convert to fraction form
    13,442.90/18,551.22 = 7,475.18/x
  3. Step 3: Cross multiply
    13,442.90x = 18,551.22 × 7,475.18
  4. Step 4: Simplify right side
    13,442.90x = 138,673,708.72
  5. Step 5: Solve for x
    x = 138,673,708.72/13,442.90
  6. Step 6: Final answer
    x = 10,315.76

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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.