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Finding the Fourth Proportional to 15,296.84, 21,108.71 and 8,581.22

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Solution

The fourth proportional to 15,296.84, 21,108.71 and 8,581.22 is: 11,841.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,296.84 : 21,108.71 = 8,581.22 : x
  2. Step 2: Convert to fraction form
    15,296.84/21,108.71 = 8,581.22/x
  3. Step 3: Cross multiply
    15,296.84x = 21,108.71 × 8,581.22
  4. Step 4: Simplify right side
    15,296.84x = 181,138,441.52
  5. Step 5: Solve for x
    x = 181,138,441.52/15,296.84
  6. Step 6: Final answer
    x = 11,841.56

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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.