Home / 21,213.38-29,275.07-11,782.55

Finding the Fourth Proportional to 21,213.38, 29,275.07 and 11,782.55

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Solution

The fourth proportional to 21,213.38, 29,275.07 and 11,782.55 is: 16,260.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.38 : 29,275.07 = 11,782.55 : x
  2. Step 2: Convert to fraction form
    21,213.38/29,275.07 = 11,782.55/x
  3. Step 3: Cross multiply
    21,213.38x = 29,275.07 × 11,782.55
  4. Step 4: Simplify right side
    21,213.38x = 344,934,770.74
  5. Step 5: Solve for x
    x = 344,934,770.74/21,213.38
  6. Step 6: Final answer
    x = 16,260.25

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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.