Home / 19,488.72-26,892.36-11,531.28

Finding the Fourth Proportional to 19,488.72, 26,892.36 and 11,531.28

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Solution

The fourth proportional to 19,488.72, 26,892.36 and 11,531.28 is: 15,911.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,488.72 : 26,892.36 = 11,531.28 : x
  2. Step 2: Convert to fraction form
    19,488.72/26,892.36 = 11,531.28/x
  3. Step 3: Cross multiply
    19,488.72x = 26,892.36 × 11,531.28
  4. Step 4: Simplify right side
    19,488.72x = 310,103,333.02
  5. Step 5: Solve for x
    x = 310,103,333.02/19,488.72
  6. Step 6: Final answer
    x = 15,911.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.