Home / 12,529.92-18,790.56-4,320

Finding the Fourth Proportional to 12,529.92, 18,790.56 and 4,320

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Solution

The fourth proportional to 12,529.92, 18,790.56 and 4,320 is: 6,478.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,529.92 : 18,790.56 = 4,320 : x
  2. Step 2: Convert to fraction form
    12,529.92/18,790.56 = 4,320/x
  3. Step 3: Cross multiply
    12,529.92x = 18,790.56 × 4,320
  4. Step 4: Simplify right side
    12,529.92x = 81,175,219.20
  5. Step 5: Solve for x
    x = 81,175,219.20/12,529.92
  6. Step 6: Final answer
    x = 6,478.51

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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.