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Finding the Fourth Proportional to 36,424.80, 54,645 and 20,637.32

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Solution

The fourth proportional to 36,424.80, 54,645 and 20,637.32 is: 30,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,424.80 : 54,645 = 20,637.32 : x
  2. Step 2: Convert to fraction form
    36,424.80/54,645 = 20,637.32/x
  3. Step 3: Cross multiply
    36,424.80x = 54,645 × 20,637.32
  4. Step 4: Simplify right side
    36,424.80x = 1,127,726,351.40
  5. Step 5: Solve for x
    x = 1,127,726,351.40/36,424.80
  6. Step 6: Final answer
    x = 30,960.40

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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.