Home / 15,469.18-21,347.45-8,395.55

Finding the Fourth Proportional to 15,469.18, 21,347.45 and 8,395.55

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Solution

The fourth proportional to 15,469.18, 21,347.45 and 8,395.55 is: 11,585.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,469.18 : 21,347.45 = 8,395.55 : x
  2. Step 2: Convert to fraction form
    15,469.18/21,347.45 = 8,395.55/x
  3. Step 3: Cross multiply
    15,469.18x = 21,347.45 × 8,395.55
  4. Step 4: Simplify right side
    15,469.18x = 179,223,546.67
  5. Step 5: Solve for x
    x = 179,223,546.67/15,469.18
  6. Step 6: Final answer
    x = 11,585.85

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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.