Home / 14,991.32-20,687.90-8,276.96

Finding the Fourth Proportional to 14,991.32, 20,687.90 and 8,276.96

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Solution

The fourth proportional to 14,991.32, 20,687.90 and 8,276.96 is: 11,422.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,991.32 : 20,687.90 = 8,276.96 : x
  2. Step 2: Convert to fraction form
    14,991.32/20,687.90 = 8,276.96/x
  3. Step 3: Cross multiply
    14,991.32x = 20,687.90 × 8,276.96
  4. Step 4: Simplify right side
    14,991.32x = 171,232,775.96
  5. Step 5: Solve for x
    x = 171,232,775.96/14,991.32
  6. Step 6: Final answer
    x = 11,422.13

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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.