Home / 28,338.05-42,508.45-20,055.09

Finding the Fourth Proportional to 28,338.05, 42,508.45 and 20,055.09

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Solution

The fourth proportional to 28,338.05, 42,508.45 and 20,055.09 is: 30,083.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.05 : 42,508.45 = 20,055.09 : x
  2. Step 2: Convert to fraction form
    28,338.05/42,508.45 = 20,055.09/x
  3. Step 3: Cross multiply
    28,338.05x = 42,508.45 × 20,055.09
  4. Step 4: Simplify right side
    28,338.05x = 852,510,862.18
  5. Step 5: Solve for x
    x = 852,510,862.18/28,338.05
  6. Step 6: Final answer
    x = 30,083.61

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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.