Home / 12,079.40-18,128.21-5,843.21

Finding the Fourth Proportional to 12,079.40, 18,128.21 and 5,843.21

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Solution

The fourth proportional to 12,079.40, 18,128.21 and 5,843.21 is: 8,769.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.40 : 18,128.21 = 5,843.21 : x
  2. Step 2: Convert to fraction form
    12,079.40/18,128.21 = 5,843.21/x
  3. Step 3: Cross multiply
    12,079.40x = 18,128.21 × 5,843.21
  4. Step 4: Simplify right side
    12,079.40x = 105,926,818.10
  5. Step 5: Solve for x
    x = 105,926,818.10/12,079.40
  6. Step 6: Final answer
    x = 8,769.22

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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.