Home / 13,847.18-20,734.32-8,287.34

Finding the Fourth Proportional to 13,847.18, 20,734.32 and 8,287.34

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Solution

The fourth proportional to 13,847.18, 20,734.32 and 8,287.34 is: 12,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,847.18 : 20,734.32 = 8,287.34 : x
  2. Step 2: Convert to fraction form
    13,847.18/20,734.32 = 8,287.34/x
  3. Step 3: Cross multiply
    13,847.18x = 20,734.32 × 8,287.34
  4. Step 4: Simplify right side
    13,847.18x = 171,832,359.51
  5. Step 5: Solve for x
    x = 171,832,359.51/13,847.18
  6. Step 6: Final answer
    x = 12,409.20

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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.