Home / 13,435.27-18,542.42-8,130.17

Finding the Fourth Proportional to 13,435.27, 18,542.42 and 8,130.17

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Solution

The fourth proportional to 13,435.27, 18,542.42 and 8,130.17 is: 11,220.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.27 : 18,542.42 = 8,130.17 : x
  2. Step 2: Convert to fraction form
    13,435.27/18,542.42 = 8,130.17/x
  3. Step 3: Cross multiply
    13,435.27x = 18,542.42 × 8,130.17
  4. Step 4: Simplify right side
    13,435.27x = 150,753,063.00
  5. Step 5: Solve for x
    x = 150,753,063.00/13,435.27
  6. Step 6: Final answer
    x = 11,220.70

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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.