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Finding the Fourth Proportional to 17,721.70, 26,582.55 and 15,259.30

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Solution

The fourth proportional to 17,721.70, 26,582.55 and 15,259.30 is: 22,888.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,721.70 : 26,582.55 = 15,259.30 : x
  2. Step 2: Convert to fraction form
    17,721.70/26,582.55 = 15,259.30/x
  3. Step 3: Cross multiply
    17,721.70x = 26,582.55 × 15,259.30
  4. Step 4: Simplify right side
    17,721.70x = 405,631,105.22
  5. Step 5: Solve for x
    x = 405,631,105.22/17,721.70
  6. Step 6: Final answer
    x = 22,888.95

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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.