Home / 20,647.39-30,876.51-15,386.06

Finding the Fourth Proportional to 20,647.39, 30,876.51 and 15,386.06

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Solution

The fourth proportional to 20,647.39, 30,876.51 and 15,386.06 is: 23,008.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.39 : 30,876.51 = 15,386.06 : x
  2. Step 2: Convert to fraction form
    20,647.39/30,876.51 = 15,386.06/x
  3. Step 3: Cross multiply
    20,647.39x = 30,876.51 × 15,386.06
  4. Step 4: Simplify right side
    20,647.39x = 475,067,764.28
  5. Step 5: Solve for x
    x = 475,067,764.28/20,647.39
  6. Step 6: Final answer
    x = 23,008.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.