Home / 31,629.26-47,406.84-12,897.60

Finding the Fourth Proportional to 31,629.26, 47,406.84 and 12,897.60

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Solution

The fourth proportional to 31,629.26, 47,406.84 and 12,897.60 is: 19,331.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,629.26 : 47,406.84 = 12,897.60 : x
  2. Step 2: Convert to fraction form
    31,629.26/47,406.84 = 12,897.60/x
  3. Step 3: Cross multiply
    31,629.26x = 47,406.84 × 12,897.60
  4. Step 4: Simplify right side
    31,629.26x = 611,434,459.58
  5. Step 5: Solve for x
    x = 611,434,459.58/31,629.26
  6. Step 6: Final answer
    x = 19,331.29

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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.