Home / 15,644.12-21,589.20-9,675.68

Finding the Fourth Proportional to 15,644.12, 21,589.20 and 9,675.68

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Solution

The fourth proportional to 15,644.12, 21,589.20 and 9,675.68 is: 13,352.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.12 : 21,589.20 = 9,675.68 : x
  2. Step 2: Convert to fraction form
    15,644.12/21,589.20 = 9,675.68/x
  3. Step 3: Cross multiply
    15,644.12x = 21,589.20 × 9,675.68
  4. Step 4: Simplify right side
    15,644.12x = 208,890,190.66
  5. Step 5: Solve for x
    x = 208,890,190.66/15,644.12
  6. Step 6: Final answer
    x = 13,352.63

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Half scale
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Double scale
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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.