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Finding the Fourth Proportional to 19,624.40, 29,436.60 and 10,408.40

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Solution

The fourth proportional to 19,624.40, 29,436.60 and 10,408.40 is: 15,612.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,624.40 : 29,436.60 = 10,408.40 : x
  2. Step 2: Convert to fraction form
    19,624.40/29,436.60 = 10,408.40/x
  3. Step 3: Cross multiply
    19,624.40x = 29,436.60 × 10,408.40
  4. Step 4: Simplify right side
    19,624.40x = 306,387,907.44
  5. Step 5: Solve for x
    x = 306,387,907.44/19,624.40
  6. Step 6: Final answer
    x = 15,612.60

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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.