Home / 19,681.39-29,519.33-5,642.62

Finding the Fourth Proportional to 19,681.39, 29,519.33 and 5,642.62

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Solution

The fourth proportional to 19,681.39, 29,519.33 and 5,642.62 is: 8,463.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.39 : 29,519.33 = 5,642.62 : x
  2. Step 2: Convert to fraction form
    19,681.39/29,519.33 = 5,642.62/x
  3. Step 3: Cross multiply
    19,681.39x = 29,519.33 × 5,642.62
  4. Step 4: Simplify right side
    19,681.39x = 166,566,273.94
  5. Step 5: Solve for x
    x = 166,566,273.94/19,681.39
  6. Step 6: Final answer
    x = 8,463.13

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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.