Home / 21,073.10-29,081.57-11,513.91

Finding the Fourth Proportional to 21,073.10, 29,081.57 and 11,513.91

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Solution

The fourth proportional to 21,073.10, 29,081.57 and 11,513.91 is: 15,889.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.10 : 29,081.57 = 11,513.91 : x
  2. Step 2: Convert to fraction form
    21,073.10/29,081.57 = 11,513.91/x
  3. Step 3: Cross multiply
    21,073.10x = 29,081.57 × 11,513.91
  4. Step 4: Simplify right side
    21,073.10x = 334,842,579.64
  5. Step 5: Solve for x
    x = 334,842,579.64/21,073.10
  6. Step 6: Final answer
    x = 15,889.57

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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.