Home / 11,999.42-18,008.76-5,426.18

Finding the Fourth Proportional to 11,999.42, 18,008.76 and 5,426.18

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Solution

The fourth proportional to 11,999.42, 18,008.76 and 5,426.18 is: 8,143.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.42 : 18,008.76 = 5,426.18 : x
  2. Step 2: Convert to fraction form
    11,999.42/18,008.76 = 5,426.18/x
  3. Step 3: Cross multiply
    11,999.42x = 18,008.76 × 5,426.18
  4. Step 4: Simplify right side
    11,999.42x = 97,718,838.71
  5. Step 5: Solve for x
    x = 97,718,838.71/11,999.42
  6. Step 6: Final answer
    x = 8,143.63

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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.