Home / 10,420.17-15,629.99-3,400.71

Finding the Fourth Proportional to 10,420.17, 15,629.99 and 3,400.71

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Solution

The fourth proportional to 10,420.17, 15,629.99 and 3,400.71 is: 5,100.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.17 : 15,629.99 = 3,400.71 : x
  2. Step 2: Convert to fraction form
    10,420.17/15,629.99 = 3,400.71/x
  3. Step 3: Cross multiply
    10,420.17x = 15,629.99 × 3,400.71
  4. Step 4: Simplify right side
    10,420.17x = 53,153,046.29
  5. Step 5: Solve for x
    x = 53,153,046.29/10,420.17
  6. Step 6: Final answer
    x = 5,100.98

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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.