Home / 20,747.81-28,630.85-11,794.07

Finding the Fourth Proportional to 20,747.81, 28,630.85 and 11,794.07

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Solution

The fourth proportional to 20,747.81, 28,630.85 and 11,794.07 is: 16,275.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.81 : 28,630.85 = 11,794.07 : x
  2. Step 2: Convert to fraction form
    20,747.81/28,630.85 = 11,794.07/x
  3. Step 3: Cross multiply
    20,747.81x = 28,630.85 × 11,794.07
  4. Step 4: Simplify right side
    20,747.81x = 337,674,046.93
  5. Step 5: Solve for x
    x = 337,674,046.93/20,747.81
  6. Step 6: Final answer
    x = 16,275.17

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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.