Home / 12,510.60-18,759.84-5,112.12

Finding the Fourth Proportional to 12,510.60, 18,759.84 and 5,112.12

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Solution

The fourth proportional to 12,510.60, 18,759.84 and 5,112.12 is: 7,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.60 : 18,759.84 = 5,112.12 : x
  2. Step 2: Convert to fraction form
    12,510.60/18,759.84 = 5,112.12/x
  3. Step 3: Cross multiply
    12,510.60x = 18,759.84 × 5,112.12
  4. Step 4: Simplify right side
    12,510.60x = 95,902,553.26
  5. Step 5: Solve for x
    x = 95,902,553.26/12,510.60
  6. Step 6: Final answer
    x = 7,665.70

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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.