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Finding the Fourth Proportional to 10,379.63, 15,569.45 and 4,223.63

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Solution

The fourth proportional to 10,379.63, 15,569.45 and 4,223.63 is: 6,335.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,379.63 : 15,569.45 = 4,223.63 : x
  2. Step 2: Convert to fraction form
    10,379.63/15,569.45 = 4,223.63/x
  3. Step 3: Cross multiply
    10,379.63x = 15,569.45 × 4,223.63
  4. Step 4: Simplify right side
    10,379.63x = 65,759,497.14
  5. Step 5: Solve for x
    x = 65,759,497.14/10,379.63
  6. Step 6: Final answer
    x = 6,335.44

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Similar ratio
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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.