Home / 10,418.70-15,628.21-3,398.68

Finding the Fourth Proportional to 10,418.70, 15,628.21 and 3,398.68

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Solution

The fourth proportional to 10,418.70, 15,628.21 and 3,398.68 is: 5,098.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,418.70 : 15,628.21 = 3,398.68 : x
  2. Step 2: Convert to fraction form
    10,418.70/15,628.21 = 3,398.68/x
  3. Step 3: Cross multiply
    10,418.70x = 15,628.21 × 3,398.68
  4. Step 4: Simplify right side
    10,418.70x = 53,115,284.76
  5. Step 5: Solve for x
    x = 53,115,284.76/10,418.70
  6. Step 6: Final answer
    x = 5,098.07

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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.