Home / 15,875.13-21,906.79-8,800.99

Finding the Fourth Proportional to 15,875.13, 21,906.79 and 8,800.99

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Solution

The fourth proportional to 15,875.13, 21,906.79 and 8,800.99 is: 12,144.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875.13 : 21,906.79 = 8,800.99 : x
  2. Step 2: Convert to fraction form
    15,875.13/21,906.79 = 8,800.99/x
  3. Step 3: Cross multiply
    15,875.13x = 21,906.79 × 8,800.99
  4. Step 4: Simplify right side
    15,875.13x = 192,801,439.72
  5. Step 5: Solve for x
    x = 192,801,439.72/15,875.13
  6. Step 6: Final answer
    x = 12,144.87

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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.