Home / 15,400.41-21,249.18-11,819.40

Finding the Fourth Proportional to 15,400.41, 21,249.18 and 11,819.40

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Solution

The fourth proportional to 15,400.41, 21,249.18 and 11,819.40 is: 16,308.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.41 : 21,249.18 = 11,819.40 : x
  2. Step 2: Convert to fraction form
    15,400.41/21,249.18 = 11,819.40/x
  3. Step 3: Cross multiply
    15,400.41x = 21,249.18 × 11,819.40
  4. Step 4: Simplify right side
    15,400.41x = 251,152,558.09
  5. Step 5: Solve for x
    x = 251,152,558.09/15,400.41
  6. Step 6: Final answer
    x = 16,308.17

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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.