Home / 21,206.05-31,796.02-7,164.75

Finding the Fourth Proportional to 21,206.05, 31,796.02 and 7,164.75

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Solution

The fourth proportional to 21,206.05, 31,796.02 and 7,164.75 is: 10,742.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206.05 : 31,796.02 = 7,164.75 : x
  2. Step 2: Convert to fraction form
    21,206.05/31,796.02 = 7,164.75/x
  3. Step 3: Cross multiply
    21,206.05x = 31,796.02 × 7,164.75
  4. Step 4: Simplify right side
    21,206.05x = 227,810,642.34
  5. Step 5: Solve for x
    x = 227,810,642.34/21,206.05
  6. Step 6: Final answer
    x = 10,742.72

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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.