Home / 19,105.40-28,655.04-5,251.16

Finding the Fourth Proportional to 19,105.40, 28,655.04 and 5,251.16

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Solution

The fourth proportional to 19,105.40, 28,655.04 and 5,251.16 is: 7,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,105.40 : 28,655.04 = 5,251.16 : x
  2. Step 2: Convert to fraction form
    19,105.40/28,655.04 = 5,251.16/x
  3. Step 3: Cross multiply
    19,105.40x = 28,655.04 × 5,251.16
  4. Step 4: Simplify right side
    19,105.40x = 150,472,199.85
  5. Step 5: Solve for x
    x = 150,472,199.85/19,105.40
  6. Step 6: Final answer
    x = 7,875.90

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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.