Home / 21,301.09-29,400.51-13,240.82

Finding the Fourth Proportional to 21,301.09, 29,400.51 and 13,240.82

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Solution

The fourth proportional to 21,301.09, 29,400.51 and 13,240.82 is: 18,275.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301.09 : 29,400.51 = 13,240.82 : x
  2. Step 2: Convert to fraction form
    21,301.09/29,400.51 = 13,240.82/x
  3. Step 3: Cross multiply
    21,301.09x = 29,400.51 × 13,240.82
  4. Step 4: Simplify right side
    21,301.09x = 389,286,794.61
  5. Step 5: Solve for x
    x = 389,286,794.61/21,301.09
  6. Step 6: Final answer
    x = 18,275.44

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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.