Home / 10,420.22-15,632.89-3,400.61

Finding the Fourth Proportional to 10,420.22, 15,632.89 and 3,400.61

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Solution

The fourth proportional to 10,420.22, 15,632.89 and 3,400.61 is: 5,101.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.22 : 15,632.89 = 3,400.61 : x
  2. Step 2: Convert to fraction form
    10,420.22/15,632.89 = 3,400.61/x
  3. Step 3: Cross multiply
    10,420.22x = 15,632.89 × 3,400.61
  4. Step 4: Simplify right side
    10,420.22x = 53,161,275.40
  5. Step 5: Solve for x
    x = 53,161,275.40/10,420.22
  6. Step 6: Final answer
    x = 5,101.74

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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.