Home / 21,871.52-32,806.88-6,290.40

Finding the Fourth Proportional to 21,871.52, 32,806.88 and 6,290.40

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Solution

The fourth proportional to 21,871.52, 32,806.88 and 6,290.40 is: 9,435.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,871.52 : 32,806.88 = 6,290.40 : x
  2. Step 2: Convert to fraction form
    21,871.52/32,806.88 = 6,290.40/x
  3. Step 3: Cross multiply
    21,871.52x = 32,806.88 × 6,290.40
  4. Step 4: Simplify right side
    21,871.52x = 206,368,397.95
  5. Step 5: Solve for x
    x = 206,368,397.95/21,871.52
  6. Step 6: Final answer
    x = 9,435.48

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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.