Home / 18,664.28-28,008.66-8,806.40

Finding the Fourth Proportional to 18,664.28, 28,008.66 and 8,806.40

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Solution

The fourth proportional to 18,664.28, 28,008.66 and 8,806.40 is: 13,215.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,664.28 : 28,008.66 = 8,806.40 : x
  2. Step 2: Convert to fraction form
    18,664.28/28,008.66 = 8,806.40/x
  3. Step 3: Cross multiply
    18,664.28x = 28,008.66 × 8,806.40
  4. Step 4: Simplify right side
    18,664.28x = 246,655,463.42
  5. Step 5: Solve for x
    x = 246,655,463.42/18,664.28
  6. Step 6: Final answer
    x = 13,215.38

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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.