Home / 13,331.07-18,388.54-7,949.74

Finding the Fourth Proportional to 13,331.07, 18,388.54 and 7,949.74

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Solution

The fourth proportional to 13,331.07, 18,388.54 and 7,949.74 is: 10,965.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.07 : 18,388.54 = 7,949.74 : x
  2. Step 2: Convert to fraction form
    13,331.07/18,388.54 = 7,949.74/x
  3. Step 3: Cross multiply
    13,331.07x = 18,388.54 × 7,949.74
  4. Step 4: Simplify right side
    13,331.07x = 146,184,046.13
  5. Step 5: Solve for x
    x = 146,184,046.13/13,331.07
  6. Step 6: Final answer
    x = 10,965.66

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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.