Home / 20,248.89-27,943.91-12,290.23

Finding the Fourth Proportional to 20,248.89, 27,943.91 and 12,290.23

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Solution

The fourth proportional to 20,248.89, 27,943.91 and 12,290.23 is: 16,960.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,248.89 : 27,943.91 = 12,290.23 : x
  2. Step 2: Convert to fraction form
    20,248.89/27,943.91 = 12,290.23/x
  3. Step 3: Cross multiply
    20,248.89x = 27,943.91 × 12,290.23
  4. Step 4: Simplify right side
    20,248.89x = 343,437,081.00
  5. Step 5: Solve for x
    x = 343,437,081.00/20,248.89
  6. Step 6: Final answer
    x = 16,960.79

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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.