Home / 20,618.51-28,451.15-11,544.39

Finding the Fourth Proportional to 20,618.51, 28,451.15 and 11,544.39

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Solution

The fourth proportional to 20,618.51, 28,451.15 and 11,544.39 is: 15,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.51 : 28,451.15 = 11,544.39 : x
  2. Step 2: Convert to fraction form
    20,618.51/28,451.15 = 11,544.39/x
  3. Step 3: Cross multiply
    20,618.51x = 28,451.15 × 11,544.39
  4. Step 4: Simplify right side
    20,618.51x = 328,451,029.29
  5. Step 5: Solve for x
    x = 328,451,029.29/20,618.51
  6. Step 6: Final answer
    x = 15,929.91

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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.