Home / 21,409.97-32,118.03-6,620.18

Finding the Fourth Proportional to 21,409.97, 32,118.03 and 6,620.18

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Solution

The fourth proportional to 21,409.97, 32,118.03 and 6,620.18 is: 9,931.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.97 : 32,118.03 = 6,620.18 : x
  2. Step 2: Convert to fraction form
    21,409.97/32,118.03 = 6,620.18/x
  3. Step 3: Cross multiply
    21,409.97x = 32,118.03 × 6,620.18
  4. Step 4: Simplify right side
    21,409.97x = 212,626,979.26
  5. Step 5: Solve for x
    x = 212,626,979.26/21,409.97
  6. Step 6: Final answer
    x = 9,931.22

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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.