Home / 31,629.39-47,420.64-19,146.68

Finding the Fourth Proportional to 31,629.39, 47,420.64 and 19,146.68

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Solution

The fourth proportional to 31,629.39, 47,420.64 and 19,146.68 is: 28,705.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,629.39 : 47,420.64 = 19,146.68 : x
  2. Step 2: Convert to fraction form
    31,629.39/47,420.64 = 19,146.68/x
  3. Step 3: Cross multiply
    31,629.39x = 47,420.64 × 19,146.68
  4. Step 4: Simplify right side
    31,629.39x = 907,947,760.20
  5. Step 5: Solve for x
    x = 907,947,760.20/31,629.39
  6. Step 6: Final answer
    x = 28,705.83

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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.