Home / 15,019.48-20,726.20-8,645.80

Finding the Fourth Proportional to 15,019.48, 20,726.20 and 8,645.80

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Solution

The fourth proportional to 15,019.48, 20,726.20 and 8,645.80 is: 11,930.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,019.48 : 20,726.20 = 8,645.80 : x
  2. Step 2: Convert to fraction form
    15,019.48/20,726.20 = 8,645.80/x
  3. Step 3: Cross multiply
    15,019.48x = 20,726.20 × 8,645.80
  4. Step 4: Simplify right side
    15,019.48x = 179,194,579.96
  5. Step 5: Solve for x
    x = 179,194,579.96/15,019.48
  6. Step 6: Final answer
    x = 11,930.81

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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.