Home / 21,315.81-31,972.58-6,524.74

Finding the Fourth Proportional to 21,315.81, 31,972.58 and 6,524.74

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Solution

The fourth proportional to 21,315.81, 31,972.58 and 6,524.74 is: 9,786.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.81 : 31,972.58 = 6,524.74 : x
  2. Step 2: Convert to fraction form
    21,315.81/31,972.58 = 6,524.74/x
  3. Step 3: Cross multiply
    21,315.81x = 31,972.58 × 6,524.74
  4. Step 4: Simplify right side
    21,315.81x = 208,612,579.14
  5. Step 5: Solve for x
    x = 208,612,579.14/21,315.81
  6. Step 6: Final answer
    x = 9,786.75

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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.