Home / 15,902.30-21,935.94-13,396.16

Finding the Fourth Proportional to 15,902.30, 21,935.94 and 13,396.16

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Solution

The fourth proportional to 15,902.30, 21,935.94 and 13,396.16 is: 18,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,902.30 : 21,935.94 = 13,396.16 : x
  2. Step 2: Convert to fraction form
    15,902.30/21,935.94 = 13,396.16/x
  3. Step 3: Cross multiply
    15,902.30x = 21,935.94 × 13,396.16
  4. Step 4: Simplify right side
    15,902.30x = 293,857,361.99
  5. Step 5: Solve for x
    x = 293,857,361.99/15,902.30
  6. Step 6: Final answer
    x = 18,478.92

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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.