Home / 21,271.25-31,851.14-14,997.30

Finding the Fourth Proportional to 21,271.25, 31,851.14 and 14,997.30

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Solution

The fourth proportional to 21,271.25, 31,851.14 and 14,997.30 is: 22,456.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.25 : 31,851.14 = 14,997.30 : x
  2. Step 2: Convert to fraction form
    21,271.25/31,851.14 = 14,997.30/x
  3. Step 3: Cross multiply
    21,271.25x = 31,851.14 × 14,997.30
  4. Step 4: Simplify right side
    21,271.25x = 477,681,101.92
  5. Step 5: Solve for x
    x = 477,681,101.92/21,271.25
  6. Step 6: Final answer
    x = 22,456.65

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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.