Home / 15,589.03-21,512.55-8,874.51

Finding the Fourth Proportional to 15,589.03, 21,512.55 and 8,874.51

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Solution

The fourth proportional to 15,589.03, 21,512.55 and 8,874.51 is: 12,246.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.03 : 21,512.55 = 8,874.51 : x
  2. Step 2: Convert to fraction form
    15,589.03/21,512.55 = 8,874.51/x
  3. Step 3: Cross multiply
    15,589.03x = 21,512.55 × 8,874.51
  4. Step 4: Simplify right side
    15,589.03x = 190,913,340.10
  5. Step 5: Solve for x
    x = 190,913,340.10/15,589.03
  6. Step 6: Final answer
    x = 12,246.65

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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.