Home / 12,079.13-18,119.30-4,288.55

Finding the Fourth Proportional to 12,079.13, 18,119.30 and 4,288.55

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Solution

The fourth proportional to 12,079.13, 18,119.30 and 4,288.55 is: 6,433.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.13 : 18,119.30 = 4,288.55 : x
  2. Step 2: Convert to fraction form
    12,079.13/18,119.30 = 4,288.55/x
  3. Step 3: Cross multiply
    12,079.13x = 18,119.30 × 4,288.55
  4. Step 4: Simplify right side
    12,079.13x = 77,705,411.98
  5. Step 5: Solve for x
    x = 77,705,411.98/12,079.13
  6. Step 6: Final answer
    x = 6,433.03

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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.