Home / 10,611.30-15,916.92-2,820.12

Finding the Fourth Proportional to 10,611.30, 15,916.92 and 2,820.12

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Solution

The fourth proportional to 10,611.30, 15,916.92 and 2,820.12 is: 4,230.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,611.30 : 15,916.92 = 2,820.12 : x
  2. Step 2: Convert to fraction form
    10,611.30/15,916.92 = 2,820.12/x
  3. Step 3: Cross multiply
    10,611.30x = 15,916.92 × 2,820.12
  4. Step 4: Simplify right side
    10,611.30x = 44,887,624.43
  5. Step 5: Solve for x
    x = 44,887,624.43/10,611.30
  6. Step 6: Final answer
    x = 4,230.17

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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.