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Finding the Fourth Proportional to 14,187.26, 21,281.88 and 4,191.88

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Solution

The fourth proportional to 14,187.26, 21,281.88 and 4,191.88 is: 6,288.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.26 : 21,281.88 = 4,191.88 : x
  2. Step 2: Convert to fraction form
    14,187.26/21,281.88 = 4,191.88/x
  3. Step 3: Cross multiply
    14,187.26x = 21,281.88 × 4,191.88
  4. Step 4: Simplify right side
    14,187.26x = 89,211,087.13
  5. Step 5: Solve for x
    x = 89,211,087.13/14,187.26
  6. Step 6: Final answer
    x = 6,288.11

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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.