Home / 21,315.35-31,972.98-5,732.99

Finding the Fourth Proportional to 21,315.35, 31,972.98 and 5,732.99

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Solution

The fourth proportional to 21,315.35, 31,972.98 and 5,732.99 is: 8,599.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.35 : 31,972.98 = 5,732.99 : x
  2. Step 2: Convert to fraction form
    21,315.35/31,972.98 = 5,732.99/x
  3. Step 3: Cross multiply
    21,315.35x = 31,972.98 × 5,732.99
  4. Step 4: Simplify right side
    21,315.35x = 183,300,745.95
  5. Step 5: Solve for x
    x = 183,300,745.95/21,315.35
  6. Step 6: Final answer
    x = 8,599.47

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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.