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Finding the Fourth Proportional to 20,346.70, 30,524.72 and 7,866.82

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Solution

The fourth proportional to 20,346.70, 30,524.72 and 7,866.82 is: 11,802.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.70 : 30,524.72 = 7,866.82 : x
  2. Step 2: Convert to fraction form
    20,346.70/30,524.72 = 7,866.82/x
  3. Step 3: Cross multiply
    20,346.70x = 30,524.72 × 7,866.82
  4. Step 4: Simplify right side
    20,346.70x = 240,132,477.79
  5. Step 5: Solve for x
    x = 240,132,477.79/20,346.70
  6. Step 6: Final answer
    x = 11,802.04

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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.