Home / 21,836.13-32,754.19-5,420.13

Finding the Fourth Proportional to 21,836.13, 32,754.19 and 5,420.13

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Solution

The fourth proportional to 21,836.13, 32,754.19 and 5,420.13 is: 8,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.13 : 32,754.19 = 5,420.13 : x
  2. Step 2: Convert to fraction form
    21,836.13/32,754.19 = 5,420.13/x
  3. Step 3: Cross multiply
    21,836.13x = 32,754.19 × 5,420.13
  4. Step 4: Simplify right side
    21,836.13x = 177,531,967.84
  5. Step 5: Solve for x
    x = 177,531,967.84/21,836.13
  6. Step 6: Final answer
    x = 8,130.19

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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.