Home / 21,158.36-31,746.26-9,306.04

Finding the Fourth Proportional to 21,158.36, 31,746.26 and 9,306.04

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Solution

The fourth proportional to 21,158.36, 31,746.26 and 9,306.04 is: 13,962.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.36 : 31,746.26 = 9,306.04 : x
  2. Step 2: Convert to fraction form
    21,158.36/31,746.26 = 9,306.04/x
  3. Step 3: Cross multiply
    21,158.36x = 31,746.26 × 9,306.04
  4. Step 4: Simplify right side
    21,158.36x = 295,431,965.41
  5. Step 5: Solve for x
    x = 295,431,965.41/21,158.36
  6. Step 6: Final answer
    x = 13,962.90

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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.