Home / 12,143.04-18,219.15-4,752.78

Finding the Fourth Proportional to 12,143.04, 18,219.15 and 4,752.78

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Solution

The fourth proportional to 12,143.04, 18,219.15 and 4,752.78 is: 7,130.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.04 : 18,219.15 = 4,752.78 : x
  2. Step 2: Convert to fraction form
    12,143.04/18,219.15 = 4,752.78/x
  3. Step 3: Cross multiply
    12,143.04x = 18,219.15 × 4,752.78
  4. Step 4: Simplify right side
    12,143.04x = 86,591,611.74
  5. Step 5: Solve for x
    x = 86,591,611.74/12,143.04
  6. Step 6: Final answer
    x = 7,130.97

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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.