Home / 21,254.78-31,882.67-9,406.02

Finding the Fourth Proportional to 21,254.78, 31,882.67 and 9,406.02

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Solution

The fourth proportional to 21,254.78, 31,882.67 and 9,406.02 is: 14,109.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.78 : 31,882.67 = 9,406.02 : x
  2. Step 2: Convert to fraction form
    21,254.78/31,882.67 = 9,406.02/x
  3. Step 3: Cross multiply
    21,254.78x = 31,882.67 × 9,406.02
  4. Step 4: Simplify right side
    21,254.78x = 299,888,984.64
  5. Step 5: Solve for x
    x = 299,888,984.64/21,254.78
  6. Step 6: Final answer
    x = 14,109.25

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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.