Home / 21,275.13-29,360.69-11,843.70

Finding the Fourth Proportional to 21,275.13, 29,360.69 and 11,843.70

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Solution

The fourth proportional to 21,275.13, 29,360.69 and 11,843.70 is: 16,344.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.13 : 29,360.69 = 11,843.70 : x
  2. Step 2: Convert to fraction form
    21,275.13/29,360.69 = 11,843.70/x
  3. Step 3: Cross multiply
    21,275.13x = 29,360.69 × 11,843.70
  4. Step 4: Simplify right side
    21,275.13x = 347,739,204.15
  5. Step 5: Solve for x
    x = 347,739,204.15/21,275.13
  6. Step 6: Final answer
    x = 16,344.87

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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.