Home / 19,899.71-29,846.78-7,418.12

Finding the Fourth Proportional to 19,899.71, 29,846.78 and 7,418.12

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Solution

The fourth proportional to 19,899.71, 29,846.78 and 7,418.12 is: 11,126.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,899.71 : 29,846.78 = 7,418.12 : x
  2. Step 2: Convert to fraction form
    19,899.71/29,846.78 = 7,418.12/x
  3. Step 3: Cross multiply
    19,899.71x = 29,846.78 × 7,418.12
  4. Step 4: Simplify right side
    19,899.71x = 221,406,837.15
  5. Step 5: Solve for x
    x = 221,406,837.15/19,899.71
  6. Step 6: Final answer
    x = 11,126.13

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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.