Home / 15,811.24-21,819.94-8,738.10

Finding the Fourth Proportional to 15,811.24, 21,819.94 and 8,738.10

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Solution

The fourth proportional to 15,811.24, 21,819.94 and 8,738.10 is: 12,058.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.24 : 21,819.94 = 8,738.10 : x
  2. Step 2: Convert to fraction form
    15,811.24/21,819.94 = 8,738.10/x
  3. Step 3: Cross multiply
    15,811.24x = 21,819.94 × 8,738.10
  4. Step 4: Simplify right side
    15,811.24x = 190,664,817.71
  5. Step 5: Solve for x
    x = 190,664,817.71/15,811.24
  6. Step 6: Final answer
    x = 12,058.81

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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.