Home / 19,937.80-29,908.38-5,146.60

Finding the Fourth Proportional to 19,937.80, 29,908.38 and 5,146.60

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Solution

The fourth proportional to 19,937.80, 29,908.38 and 5,146.60 is: 7,720.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,937.80 : 29,908.38 = 5,146.60 : x
  2. Step 2: Convert to fraction form
    19,937.80/29,908.38 = 5,146.60/x
  3. Step 3: Cross multiply
    19,937.80x = 29,908.38 × 5,146.60
  4. Step 4: Simplify right side
    19,937.80x = 153,926,468.51
  5. Step 5: Solve for x
    x = 153,926,468.51/19,937.80
  6. Step 6: Final answer
    x = 7,720.33

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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.