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Finding the Fourth Proportional to 36,007.70, 53,965.65 and 20,212.70

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Solution

The fourth proportional to 36,007.70, 53,965.65 and 20,212.70 is: 30,293.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,007.70 : 53,965.65 = 20,212.70 : x
  2. Step 2: Convert to fraction form
    36,007.70/53,965.65 = 20,212.70/x
  3. Step 3: Cross multiply
    36,007.70x = 53,965.65 × 20,212.70
  4. Step 4: Simplify right side
    36,007.70x = 1,090,791,493.76
  5. Step 5: Solve for x
    x = 1,090,791,493.76/36,007.70
  6. Step 6: Final answer
    x = 30,293.28

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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.