Home / 31,390.79-43,319.60-17,243.64

Finding the Fourth Proportional to 31,390.79, 43,319.60 and 17,243.64

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Solution

The fourth proportional to 31,390.79, 43,319.60 and 17,243.64 is: 23,796.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.79 : 43,319.60 = 17,243.64 : x
  2. Step 2: Convert to fraction form
    31,390.79/43,319.60 = 17,243.64/x
  3. Step 3: Cross multiply
    31,390.79x = 43,319.60 × 17,243.64
  4. Step 4: Simplify right side
    31,390.79x = 746,987,501.13
  5. Step 5: Solve for x
    x = 746,987,501.13/31,390.79
  6. Step 6: Final answer
    x = 23,796.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.