Home / 21,309.18-29,407.06-11,876.73

Finding the Fourth Proportional to 21,309.18, 29,407.06 and 11,876.73

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Solution

The fourth proportional to 21,309.18, 29,407.06 and 11,876.73 is: 16,390.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.18 : 29,407.06 = 11,876.73 : x
  2. Step 2: Convert to fraction form
    21,309.18/29,407.06 = 11,876.73/x
  3. Step 3: Cross multiply
    21,309.18x = 29,407.06 × 11,876.73
  4. Step 4: Simplify right side
    21,309.18x = 349,259,711.71
  5. Step 5: Solve for x
    x = 349,259,711.71/21,309.18
  6. Step 6: Final answer
    x = 16,390.11

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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.