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Finding the Fourth Proportional to 22,491.20, 33,736.80 and 15,118.40

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Solution

The fourth proportional to 22,491.20, 33,736.80 and 15,118.40 is: 22,677.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,491.20 : 33,736.80 = 15,118.40 : x
  2. Step 2: Convert to fraction form
    22,491.20/33,736.80 = 15,118.40/x
  3. Step 3: Cross multiply
    22,491.20x = 33,736.80 × 15,118.40
  4. Step 4: Simplify right side
    22,491.20x = 510,046,437.12
  5. Step 5: Solve for x
    x = 510,046,437.12/22,491.20
  6. Step 6: Final answer
    x = 22,677.60

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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.