Home / 15,491.44-21,381.30-8,777.08

Finding the Fourth Proportional to 15,491.44, 21,381.30 and 8,777.08

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Solution

The fourth proportional to 15,491.44, 21,381.30 and 8,777.08 is: 12,114.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,491.44 : 21,381.30 = 8,777.08 : x
  2. Step 2: Convert to fraction form
    15,491.44/21,381.30 = 8,777.08/x
  3. Step 3: Cross multiply
    15,491.44x = 21,381.30 × 8,777.08
  4. Step 4: Simplify right side
    15,491.44x = 187,665,380.60
  5. Step 5: Solve for x
    x = 187,665,380.60/15,491.44
  6. Step 6: Final answer
    x = 12,114.13

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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.