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Finding the Fourth Proportional to 10,424.40, 15,636.84 and 3,404.40

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Solution

The fourth proportional to 10,424.40, 15,636.84 and 3,404.40 is: 5,106.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,424.40 : 15,636.84 = 3,404.40 : x
  2. Step 2: Convert to fraction form
    10,424.40/15,636.84 = 3,404.40/x
  3. Step 3: Cross multiply
    10,424.40x = 15,636.84 × 3,404.40
  4. Step 4: Simplify right side
    10,424.40x = 53,234,058.10
  5. Step 5: Solve for x
    x = 53,234,058.10/10,424.40
  6. Step 6: Final answer
    x = 5,106.68

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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.