Home / 20,745.90-31,073.13-17,147.16

Finding the Fourth Proportional to 20,745.90, 31,073.13 and 17,147.16

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Solution

The fourth proportional to 20,745.90, 31,073.13 and 17,147.16 is: 25,682.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.90 : 31,073.13 = 17,147.16 : x
  2. Step 2: Convert to fraction form
    20,745.90/31,073.13 = 17,147.16/x
  3. Step 3: Cross multiply
    20,745.90x = 31,073.13 × 17,147.16
  4. Step 4: Simplify right side
    20,745.90x = 532,815,931.81
  5. Step 5: Solve for x
    x = 532,815,931.81/20,745.90
  6. Step 6: Final answer
    x = 25,682.95

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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.