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Finding the Fourth Proportional to 30,168.65, 45,253.55 and 10,447.85

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Solution

The fourth proportional to 30,168.65, 45,253.55 and 10,447.85 is: 15,671.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,168.65 : 45,253.55 = 10,447.85 : x
  2. Step 2: Convert to fraction form
    30,168.65/45,253.55 = 10,447.85/x
  3. Step 3: Cross multiply
    30,168.65x = 45,253.55 × 10,447.85
  4. Step 4: Simplify right side
    30,168.65x = 472,802,441.62
  5. Step 5: Solve for x
    x = 472,802,441.62/30,168.65
  6. Step 6: Final answer
    x = 15,671.98

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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.