Home / 15,408.36-21,249-11,865.24

Finding the Fourth Proportional to 15,408.36, 21,249 and 11,865.24

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Solution

The fourth proportional to 15,408.36, 21,249 and 11,865.24 is: 16,362.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.36 : 21,249 = 11,865.24 : x
  2. Step 2: Convert to fraction form
    15,408.36/21,249 = 11,865.24/x
  3. Step 3: Cross multiply
    15,408.36x = 21,249 × 11,865.24
  4. Step 4: Simplify right side
    15,408.36x = 252,124,484.76
  5. Step 5: Solve for x
    x = 252,124,484.76/15,408.36
  6. Step 6: Final answer
    x = 16,362.84

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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.