Home / 13,309.60-18,366.59-8,003.39

Finding the Fourth Proportional to 13,309.60, 18,366.59 and 8,003.39

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Solution

The fourth proportional to 13,309.60, 18,366.59 and 8,003.39 is: 11,044.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.60 : 18,366.59 = 8,003.39 : x
  2. Step 2: Convert to fraction form
    13,309.60/18,366.59 = 8,003.39/x
  3. Step 3: Cross multiply
    13,309.60x = 18,366.59 × 8,003.39
  4. Step 4: Simplify right side
    13,309.60x = 146,994,982.74
  5. Step 5: Solve for x
    x = 146,994,982.74/13,309.60
  6. Step 6: Final answer
    x = 11,044.28

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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.