Home / 13,895.32-20,811.30-8,688.28

Finding the Fourth Proportional to 13,895.32, 20,811.30 and 8,688.28

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Solution

The fourth proportional to 13,895.32, 20,811.30 and 8,688.28 is: 13,012.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,895.32 : 20,811.30 = 8,688.28 : x
  2. Step 2: Convert to fraction form
    13,895.32/20,811.30 = 8,688.28/x
  3. Step 3: Cross multiply
    13,895.32x = 20,811.30 × 8,688.28
  4. Step 4: Simplify right side
    13,895.32x = 180,814,401.56
  5. Step 5: Solve for x
    x = 180,814,401.56/13,895.32
  6. Step 6: Final answer
    x = 13,012.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.