Home / 21,540.95-29,726.22-12,109.51

Finding the Fourth Proportional to 21,540.95, 29,726.22 and 12,109.51

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Solution

The fourth proportional to 21,540.95, 29,726.22 and 12,109.51 is: 16,710.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.95 : 29,726.22 = 12,109.51 : x
  2. Step 2: Convert to fraction form
    21,540.95/29,726.22 = 12,109.51/x
  3. Step 3: Cross multiply
    21,540.95x = 29,726.22 × 12,109.51
  4. Step 4: Simplify right side
    21,540.95x = 359,970,040.92
  5. Step 5: Solve for x
    x = 359,970,040.92/21,540.95
  6. Step 6: Final answer
    x = 16,710.97

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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.