Home / 20,952.90-28,906.81-11,995.61

Finding the Fourth Proportional to 20,952.90, 28,906.81 and 11,995.61

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Solution

The fourth proportional to 20,952.90, 28,906.81 and 11,995.61 is: 16,549.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.90 : 28,906.81 = 11,995.61 : x
  2. Step 2: Convert to fraction form
    20,952.90/28,906.81 = 11,995.61/x
  3. Step 3: Cross multiply
    20,952.90x = 28,906.81 × 11,995.61
  4. Step 4: Simplify right side
    20,952.90x = 346,754,644.58
  5. Step 5: Solve for x
    x = 346,754,644.58/20,952.90
  6. Step 6: Final answer
    x = 16,549.24

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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.