Home / 13,035.88-17,982.84-8,315.20

Finding the Fourth Proportional to 13,035.88, 17,982.84 and 8,315.20

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Solution

The fourth proportional to 13,035.88, 17,982.84 and 8,315.20 is: 11,470.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,035.88 : 17,982.84 = 8,315.20 : x
  2. Step 2: Convert to fraction form
    13,035.88/17,982.84 = 8,315.20/x
  3. Step 3: Cross multiply
    13,035.88x = 17,982.84 × 8,315.20
  4. Step 4: Simplify right side
    13,035.88x = 149,530,911.17
  5. Step 5: Solve for x
    x = 149,530,911.17/13,035.88
  6. Step 6: Final answer
    x = 11,470.72

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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.