Home / 21,326.68-31,986.40-5,740.84

Finding the Fourth Proportional to 21,326.68, 31,986.40 and 5,740.84

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Solution

The fourth proportional to 21,326.68, 31,986.40 and 5,740.84 is: 8,610.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.68 : 31,986.40 = 5,740.84 : x
  2. Step 2: Convert to fraction form
    21,326.68/31,986.40 = 5,740.84/x
  3. Step 3: Cross multiply
    21,326.68x = 31,986.40 × 5,740.84
  4. Step 4: Simplify right side
    21,326.68x = 183,628,804.58
  5. Step 5: Solve for x
    x = 183,628,804.58/21,326.68
  6. Step 6: Final answer
    x = 8,610.29

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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.