Home / 13,922.79-19,213.22-7,872.94

Finding the Fourth Proportional to 13,922.79, 19,213.22 and 7,872.94

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Solution

The fourth proportional to 13,922.79, 19,213.22 and 7,872.94 is: 10,864.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,922.79 : 19,213.22 = 7,872.94 : x
  2. Step 2: Convert to fraction form
    13,922.79/19,213.22 = 7,872.94/x
  3. Step 3: Cross multiply
    13,922.79x = 19,213.22 × 7,872.94
  4. Step 4: Simplify right side
    13,922.79x = 151,264,499.92
  5. Step 5: Solve for x
    x = 151,264,499.92/13,922.79
  6. Step 6: Final answer
    x = 10,864.52

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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.