Home / 13,019.08-19,531.52-7,172.68

Finding the Fourth Proportional to 13,019.08, 19,531.52 and 7,172.68

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Solution

The fourth proportional to 13,019.08, 19,531.52 and 7,172.68 is: 10,760.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.08 : 19,531.52 = 7,172.68 : x
  2. Step 2: Convert to fraction form
    13,019.08/19,531.52 = 7,172.68/x
  3. Step 3: Cross multiply
    13,019.08x = 19,531.52 × 7,172.68
  4. Step 4: Simplify right side
    13,019.08x = 140,093,342.87
  5. Step 5: Solve for x
    x = 140,093,342.87/13,019.08
  6. Step 6: Final answer
    x = 10,760.62

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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.