Home / 31,335.47-43,218.51-19,405.43

Finding the Fourth Proportional to 31,335.47, 43,218.51 and 19,405.43

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Solution

The fourth proportional to 31,335.47, 43,218.51 and 19,405.43 is: 26,764.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,335.47 : 43,218.51 = 19,405.43 : x
  2. Step 2: Convert to fraction form
    31,335.47/43,218.51 = 19,405.43/x
  3. Step 3: Cross multiply
    31,335.47x = 43,218.51 × 19,405.43
  4. Step 4: Simplify right side
    31,335.47x = 838,673,770.51
  5. Step 5: Solve for x
    x = 838,673,770.51/31,335.47
  6. Step 6: Final answer
    x = 26,764.36

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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.