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Finding the Fourth Proportional to 14,641.65, 20,208.21 and 8,354.03

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Solution

The fourth proportional to 14,641.65, 20,208.21 and 8,354.03 is: 11,530.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,641.65 : 20,208.21 = 8,354.03 : x
  2. Step 2: Convert to fraction form
    14,641.65/20,208.21 = 8,354.03/x
  3. Step 3: Cross multiply
    14,641.65x = 20,208.21 × 8,354.03
  4. Step 4: Simplify right side
    14,641.65x = 168,819,891.55
  5. Step 5: Solve for x
    x = 168,819,891.55/14,641.65
  6. Step 6: Final answer
    x = 11,530.11

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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.