Home / 21,656.30-29,882.67-12,095.78

Finding the Fourth Proportional to 21,656.30, 29,882.67 and 12,095.78

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Solution

The fourth proportional to 21,656.30, 29,882.67 and 12,095.78 is: 16,690.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.30 : 29,882.67 = 12,095.78 : x
  2. Step 2: Convert to fraction form
    21,656.30/29,882.67 = 12,095.78/x
  3. Step 3: Cross multiply
    21,656.30x = 29,882.67 × 12,095.78
  4. Step 4: Simplify right side
    21,656.30x = 361,454,202.13
  5. Step 5: Solve for x
    x = 361,454,202.13/21,656.30
  6. Step 6: Final answer
    x = 16,690.49

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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.