Home / 21,346.30-29,476.85-13,293.78

Finding the Fourth Proportional to 21,346.30, 29,476.85 and 13,293.78

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Solution

The fourth proportional to 21,346.30, 29,476.85 and 13,293.78 is: 18,357.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.30 : 29,476.85 = 13,293.78 : x
  2. Step 2: Convert to fraction form
    21,346.30/29,476.85 = 13,293.78/x
  3. Step 3: Cross multiply
    21,346.30x = 29,476.85 × 13,293.78
  4. Step 4: Simplify right side
    21,346.30x = 391,858,545.14
  5. Step 5: Solve for x
    x = 391,858,545.14/21,346.30
  6. Step 6: Final answer
    x = 18,357.22

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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.