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Finding the Fourth Proportional to 14,294.88, 21,455.42 and 7,279.74

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Solution

The fourth proportional to 14,294.88, 21,455.42 and 7,279.74 is: 10,926.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,294.88 : 21,455.42 = 7,279.74 : x
  2. Step 2: Convert to fraction form
    14,294.88/21,455.42 = 7,279.74/x
  3. Step 3: Cross multiply
    14,294.88x = 21,455.42 × 7,279.74
  4. Step 4: Simplify right side
    14,294.88x = 156,189,879.19
  5. Step 5: Solve for x
    x = 156,189,879.19/14,294.88
  6. Step 6: Final answer
    x = 10,926.28

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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.