Home / 15,579.57-21,496.51-9,912.25

Finding the Fourth Proportional to 15,579.57, 21,496.51 and 9,912.25

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Solution

The fourth proportional to 15,579.57, 21,496.51 and 9,912.25 is: 13,676.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.57 : 21,496.51 = 9,912.25 : x
  2. Step 2: Convert to fraction form
    15,579.57/21,496.51 = 9,912.25/x
  3. Step 3: Cross multiply
    15,579.57x = 21,496.51 × 9,912.25
  4. Step 4: Simplify right side
    15,579.57x = 213,078,781.25
  5. Step 5: Solve for x
    x = 213,078,781.25/15,579.57
  6. Step 6: Final answer
    x = 13,676.81

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1.5x scale

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.