Home / 20,763.93-28,649.82-13,207.50

Finding the Fourth Proportional to 20,763.93, 28,649.82 and 13,207.50

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Solution

The fourth proportional to 20,763.93, 28,649.82 and 13,207.50 is: 18,223.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.93 : 28,649.82 = 13,207.50 : x
  2. Step 2: Convert to fraction form
    20,763.93/28,649.82 = 13,207.50/x
  3. Step 3: Cross multiply
    20,763.93x = 28,649.82 × 13,207.50
  4. Step 4: Simplify right side
    20,763.93x = 378,392,497.65
  5. Step 5: Solve for x
    x = 378,392,497.65/20,763.93
  6. Step 6: Final answer
    x = 18,223.55

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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.