Home / 13,317.20-18,383.66-8,603.80

Finding the Fourth Proportional to 13,317.20, 18,383.66 and 8,603.80

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Solution

The fourth proportional to 13,317.20, 18,383.66 and 8,603.80 is: 11,877.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.20 : 18,383.66 = 8,603.80 : x
  2. Step 2: Convert to fraction form
    13,317.20/18,383.66 = 8,603.80/x
  3. Step 3: Cross multiply
    13,317.20x = 18,383.66 × 8,603.80
  4. Step 4: Simplify right side
    13,317.20x = 158,169,333.91
  5. Step 5: Solve for x
    x = 158,169,333.91/13,317.20
  6. Step 6: Final answer
    x = 11,877.07

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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.