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Finding the Fourth Proportional to 14,550.16, 20,079.40 and 7,926.16

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Solution

The fourth proportional to 14,550.16, 20,079.40 and 7,926.16 is: 10,938.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,550.16 : 20,079.40 = 7,926.16 : x
  2. Step 2: Convert to fraction form
    14,550.16/20,079.40 = 7,926.16/x
  3. Step 3: Cross multiply
    14,550.16x = 20,079.40 × 7,926.16
  4. Step 4: Simplify right side
    14,550.16x = 159,152,537.10
  5. Step 5: Solve for x
    x = 159,152,537.10/14,550.16
  6. Step 6: Final answer
    x = 10,938.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.