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Finding the Fourth Proportional to 14,393.89, 19,864.98 and 8,425.19

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Solution

The fourth proportional to 14,393.89, 19,864.98 and 8,425.19 is: 11,627.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,393.89 : 19,864.98 = 8,425.19 : x
  2. Step 2: Convert to fraction form
    14,393.89/19,864.98 = 8,425.19/x
  3. Step 3: Cross multiply
    14,393.89x = 19,864.98 × 8,425.19
  4. Step 4: Simplify right side
    14,393.89x = 167,366,230.85
  5. Step 5: Solve for x
    x = 167,366,230.85/14,393.89
  6. Step 6: Final answer
    x = 11,627.59

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Half scale
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Double scale
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Similar ratio
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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.