Home / 15,902.79-21,954.06-11,208.03

Finding the Fourth Proportional to 15,902.79, 21,954.06 and 11,208.03

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Solution

The fourth proportional to 15,902.79, 21,954.06 and 11,208.03 is: 15,472.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,902.79 : 21,954.06 = 11,208.03 : x
  2. Step 2: Convert to fraction form
    15,902.79/21,954.06 = 11,208.03/x
  3. Step 3: Cross multiply
    15,902.79x = 21,954.06 × 11,208.03
  4. Step 4: Simplify right side
    15,902.79x = 246,061,763.10
  5. Step 5: Solve for x
    x = 246,061,763.10/15,902.79
  6. Step 6: Final answer
    x = 15,472.87

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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.