Home / 21,175.81-31,774.56-9,337.84

Finding the Fourth Proportional to 21,175.81, 31,774.56 and 9,337.84

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Solution

The fourth proportional to 21,175.81, 31,774.56 and 9,337.84 is: 14,011.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.81 : 31,774.56 = 9,337.84 : x
  2. Step 2: Convert to fraction form
    21,175.81/31,774.56 = 9,337.84/x
  3. Step 3: Cross multiply
    21,175.81x = 31,774.56 × 9,337.84
  4. Step 4: Simplify right side
    21,175.81x = 296,705,757.35
  5. Step 5: Solve for x
    x = 296,705,757.35/21,175.81
  6. Step 6: Final answer
    x = 14,011.54

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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.