Home / 14,079.20-19,428.78-8,111.12

Finding the Fourth Proportional to 14,079.20, 19,428.78 and 8,111.12

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Solution

The fourth proportional to 14,079.20, 19,428.78 and 8,111.12 is: 11,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.20 : 19,428.78 = 8,111.12 : x
  2. Step 2: Convert to fraction form
    14,079.20/19,428.78 = 8,111.12/x
  3. Step 3: Cross multiply
    14,079.20x = 19,428.78 × 8,111.12
  4. Step 4: Simplify right side
    14,079.20x = 157,589,166.03
  5. Step 5: Solve for x
    x = 157,589,166.03/14,079.20
  6. Step 6: Final answer
    x = 11,193.05

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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.