Home / 15,523.36-21,381.42-11,931.44

Finding the Fourth Proportional to 15,523.36, 21,381.42 and 11,931.44

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Solution

The fourth proportional to 15,523.36, 21,381.42 and 11,931.44 is: 16,434.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.36 : 21,381.42 = 11,931.44 : x
  2. Step 2: Convert to fraction form
    15,523.36/21,381.42 = 11,931.44/x
  3. Step 3: Cross multiply
    15,523.36x = 21,381.42 × 11,931.44
  4. Step 4: Simplify right side
    15,523.36x = 255,111,183.30
  5. Step 5: Solve for x
    x = 255,111,183.30/15,523.36
  6. Step 6: Final answer
    x = 16,434.02

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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.