Home / 21,119.72-31,667.28-9,273.02

Finding the Fourth Proportional to 21,119.72, 31,667.28 and 9,273.02

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Solution

The fourth proportional to 21,119.72, 31,667.28 and 9,273.02 is: 13,904.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,119.72 : 31,667.28 = 9,273.02 : x
  2. Step 2: Convert to fraction form
    21,119.72/31,667.28 = 9,273.02/x
  3. Step 3: Cross multiply
    21,119.72x = 31,667.28 × 9,273.02
  4. Step 4: Simplify right side
    21,119.72x = 293,651,246.43
  5. Step 5: Solve for x
    x = 293,651,246.43/21,119.72
  6. Step 6: Final answer
    x = 13,904.13

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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.