Home / 13,872.57-19,141.31-7,902.66

Finding the Fourth Proportional to 13,872.57, 19,141.31 and 7,902.66

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Solution

The fourth proportional to 13,872.57, 19,141.31 and 7,902.66 is: 10,904.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.57 : 19,141.31 = 7,902.66 : x
  2. Step 2: Convert to fraction form
    13,872.57/19,141.31 = 7,902.66/x
  3. Step 3: Cross multiply
    13,872.57x = 19,141.31 × 7,902.66
  4. Step 4: Simplify right side
    13,872.57x = 151,267,264.88
  5. Step 5: Solve for x
    x = 151,267,264.88/13,872.57
  6. Step 6: Final answer
    x = 10,904.05

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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.