Home / 15,935.84-21,991.60-8,862.56

Finding the Fourth Proportional to 15,935.84, 21,991.60 and 8,862.56

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Solution

The fourth proportional to 15,935.84, 21,991.60 and 8,862.56 is: 12,230.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,935.84 : 21,991.60 = 8,862.56 : x
  2. Step 2: Convert to fraction form
    15,935.84/21,991.60 = 8,862.56/x
  3. Step 3: Cross multiply
    15,935.84x = 21,991.60 × 8,862.56
  4. Step 4: Simplify right side
    15,935.84x = 194,901,874.50
  5. Step 5: Solve for x
    x = 194,901,874.50/15,935.84
  6. Step 6: Final answer
    x = 12,230.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.