Home / 28,465.20-39,287.16-27,589.68

Finding the Fourth Proportional to 28,465.20, 39,287.16 and 27,589.68

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Solution

The fourth proportional to 28,465.20, 39,287.16 and 27,589.68 is: 38,078.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,465.20 : 39,287.16 = 27,589.68 : x
  2. Step 2: Convert to fraction form
    28,465.20/39,287.16 = 27,589.68/x
  3. Step 3: Cross multiply
    28,465.20x = 39,287.16 × 27,589.68
  4. Step 4: Simplify right side
    28,465.20x = 1,083,920,172.51
  5. Step 5: Solve for x
    x = 1,083,920,172.51/28,465.20
  6. Step 6: Final answer
    x = 38,078.78

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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.