Home / 19,145.78-28,707.42-7,445.24

Finding the Fourth Proportional to 19,145.78, 28,707.42 and 7,445.24

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Solution

The fourth proportional to 19,145.78, 28,707.42 and 7,445.24 is: 11,163.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.78 : 28,707.42 = 7,445.24 : x
  2. Step 2: Convert to fraction form
    19,145.78/28,707.42 = 7,445.24/x
  3. Step 3: Cross multiply
    19,145.78x = 28,707.42 × 7,445.24
  4. Step 4: Simplify right side
    19,145.78x = 213,733,631.68
  5. Step 5: Solve for x
    x = 213,733,631.68/19,145.78
  6. Step 6: Final answer
    x = 11,163.49

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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.