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Finding the Fourth Proportional to 14,808.17, 20,431.89 and 8,838.65

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Solution

The fourth proportional to 14,808.17, 20,431.89 and 8,838.65 is: 12,195.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,808.17 : 20,431.89 = 8,838.65 : x
  2. Step 2: Convert to fraction form
    14,808.17/20,431.89 = 8,838.65/x
  3. Step 3: Cross multiply
    14,808.17x = 20,431.89 × 8,838.65
  4. Step 4: Simplify right side
    14,808.17x = 180,590,222.39
  5. Step 5: Solve for x
    x = 180,590,222.39/14,808.17
  6. Step 6: Final answer
    x = 12,195.31

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1.5x scale

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.