Home / 15,439.15-23,145.20-7,429.92

Finding the Fourth Proportional to 15,439.15, 23,145.20 and 7,429.92

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Solution

The fourth proportional to 15,439.15, 23,145.20 and 7,429.92 is: 11,138.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.15 : 23,145.20 = 7,429.92 : x
  2. Step 2: Convert to fraction form
    15,439.15/23,145.20 = 7,429.92/x
  3. Step 3: Cross multiply
    15,439.15x = 23,145.20 × 7,429.92
  4. Step 4: Simplify right side
    15,439.15x = 171,966,984.38
  5. Step 5: Solve for x
    x = 171,966,984.38/15,439.15
  6. Step 6: Final answer
    x = 11,138.37

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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.