Home / 21,094.34-31,616.91-11,729.87

Finding the Fourth Proportional to 21,094.34, 31,616.91 and 11,729.87

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Solution

The fourth proportional to 21,094.34, 31,616.91 and 11,729.87 is: 17,581.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,094.34 : 31,616.91 = 11,729.87 : x
  2. Step 2: Convert to fraction form
    21,094.34/31,616.91 = 11,729.87/x
  3. Step 3: Cross multiply
    21,094.34x = 31,616.91 × 11,729.87
  4. Step 4: Simplify right side
    21,094.34x = 370,862,244.10
  5. Step 5: Solve for x
    x = 370,862,244.10/21,094.34
  6. Step 6: Final answer
    x = 17,581.13

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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.