Home / 21,077.94-31,607.55-11,215.14

Finding the Fourth Proportional to 21,077.94, 31,607.55 and 11,215.14

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Solution

The fourth proportional to 21,077.94, 31,607.55 and 11,215.14 is: 16,817.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.94 : 31,607.55 = 11,215.14 : x
  2. Step 2: Convert to fraction form
    21,077.94/31,607.55 = 11,215.14/x
  3. Step 3: Cross multiply
    21,077.94x = 31,607.55 × 11,215.14
  4. Step 4: Simplify right side
    21,077.94x = 354,483,098.31
  5. Step 5: Solve for x
    x = 354,483,098.31/21,077.94
  6. Step 6: Final answer
    x = 16,817.73

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Similar ratio
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1.5x scale

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.