Home / 14,121.45-21,182.55-7,877.97

Finding the Fourth Proportional to 14,121.45, 21,182.55 and 7,877.97

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Solution

The fourth proportional to 14,121.45, 21,182.55 and 7,877.97 is: 11,817.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.45 : 21,182.55 = 7,877.97 : x
  2. Step 2: Convert to fraction form
    14,121.45/21,182.55 = 7,877.97/x
  3. Step 3: Cross multiply
    14,121.45x = 21,182.55 × 7,877.97
  4. Step 4: Simplify right side
    14,121.45x = 166,875,493.42
  5. Step 5: Solve for x
    x = 166,875,493.42/14,121.45
  6. Step 6: Final answer
    x = 11,817.16

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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.