Home / 20,983.23-28,958.22-11,552.40

Finding the Fourth Proportional to 20,983.23, 28,958.22 and 11,552.40

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Solution

The fourth proportional to 20,983.23, 28,958.22 and 11,552.40 is: 15,943.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.23 : 28,958.22 = 11,552.40 : x
  2. Step 2: Convert to fraction form
    20,983.23/28,958.22 = 11,552.40/x
  3. Step 3: Cross multiply
    20,983.23x = 28,958.22 × 11,552.40
  4. Step 4: Simplify right side
    20,983.23x = 334,536,940.73
  5. Step 5: Solve for x
    x = 334,536,940.73/20,983.23
  6. Step 6: Final answer
    x = 15,943.06

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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.