Home / 31,357.71-43,259.51-18,611.43

Finding the Fourth Proportional to 31,357.71, 43,259.51 and 18,611.43

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Solution

The fourth proportional to 31,357.71, 43,259.51 and 18,611.43 is: 25,675.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,357.71 : 43,259.51 = 18,611.43 : x
  2. Step 2: Convert to fraction form
    31,357.71/43,259.51 = 18,611.43/x
  3. Step 3: Cross multiply
    31,357.71x = 43,259.51 × 18,611.43
  4. Step 4: Simplify right side
    31,357.71x = 805,121,342.20
  5. Step 5: Solve for x
    x = 805,121,342.20/31,357.71
  6. Step 6: Final answer
    x = 25,675.39

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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.