Home / 20,260.70-27,929.13-15,776.54

Finding the Fourth Proportional to 20,260.70, 27,929.13 and 15,776.54

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Solution

The fourth proportional to 20,260.70, 27,929.13 and 15,776.54 is: 21,747.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.70 : 27,929.13 = 15,776.54 : x
  2. Step 2: Convert to fraction form
    20,260.70/27,929.13 = 15,776.54/x
  3. Step 3: Cross multiply
    20,260.70x = 27,929.13 × 15,776.54
  4. Step 4: Simplify right side
    20,260.70x = 440,625,036.61
  5. Step 5: Solve for x
    x = 440,625,036.61/20,260.70
  6. Step 6: Final answer
    x = 21,747.77

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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.