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Finding the Fourth Proportional to 36,213.45, 54,323.93 and 9,918.20

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Solution

The fourth proportional to 36,213.45, 54,323.93 and 9,918.20 is: 14,878.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,213.45 : 54,323.93 = 9,918.20 : x
  2. Step 2: Convert to fraction form
    36,213.45/54,323.93 = 9,918.20/x
  3. Step 3: Cross multiply
    36,213.45x = 54,323.93 × 9,918.20
  4. Step 4: Simplify right side
    36,213.45x = 538,795,602.53
  5. Step 5: Solve for x
    x = 538,795,602.53/36,213.45
  6. Step 6: Final answer
    x = 14,878.33

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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.