Home / 13,872.57-19,141.16-7,902.60

Finding the Fourth Proportional to 13,872.57, 19,141.16 and 7,902.60

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Solution

The fourth proportional to 13,872.57, 19,141.16 and 7,902.60 is: 10,903.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.57 : 19,141.16 = 7,902.60 : x
  2. Step 2: Convert to fraction form
    13,872.57/19,141.16 = 7,902.60/x
  3. Step 3: Cross multiply
    13,872.57x = 19,141.16 × 7,902.60
  4. Step 4: Simplify right side
    13,872.57x = 151,264,891.50
  5. Step 5: Solve for x
    x = 151,264,891.50/13,872.57
  6. Step 6: Final answer
    x = 10,903.88

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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.