Home / 10,279.36-15,420.12-3,355.12

Finding the Fourth Proportional to 10,279.36, 15,420.12 and 3,355.12

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Solution

The fourth proportional to 10,279.36, 15,420.12 and 3,355.12 is: 5,033.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.36 : 15,420.12 = 3,355.12 : x
  2. Step 2: Convert to fraction form
    10,279.36/15,420.12 = 3,355.12/x
  3. Step 3: Cross multiply
    10,279.36x = 15,420.12 × 3,355.12
  4. Step 4: Simplify right side
    10,279.36x = 51,736,353.01
  5. Step 5: Solve for x
    x = 51,736,353.01/10,279.36
  6. Step 6: Final answer
    x = 5,033.03

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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.