Home / 15,856.32-21,882.11-8,783.27

Finding the Fourth Proportional to 15,856.32, 21,882.11 and 8,783.27

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Solution

The fourth proportional to 15,856.32, 21,882.11 and 8,783.27 is: 12,121.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,856.32 : 21,882.11 = 8,783.27 : x
  2. Step 2: Convert to fraction form
    15,856.32/21,882.11 = 8,783.27/x
  3. Step 3: Cross multiply
    15,856.32x = 21,882.11 × 8,783.27
  4. Step 4: Simplify right side
    15,856.32x = 192,196,480.30
  5. Step 5: Solve for x
    x = 192,196,480.30/15,856.32
  6. Step 6: Final answer
    x = 12,121.13

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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.