Home / 15,589.18-21,511.20-8,874.82

Finding the Fourth Proportional to 15,589.18, 21,511.20 and 8,874.82

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Solution

The fourth proportional to 15,589.18, 21,511.20 and 8,874.82 is: 12,246.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.18 : 21,511.20 = 8,874.82 : x
  2. Step 2: Convert to fraction form
    15,589.18/21,511.20 = 8,874.82/x
  3. Step 3: Cross multiply
    15,589.18x = 21,511.20 × 8,874.82
  4. Step 4: Simplify right side
    15,589.18x = 190,908,027.98
  5. Step 5: Solve for x
    x = 190,908,027.98/15,589.18
  6. Step 6: Final answer
    x = 12,246.19

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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.