Home / 13,301.78-18,356.45-7,999.67

Finding the Fourth Proportional to 13,301.78, 18,356.45 and 7,999.67

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Solution

The fourth proportional to 13,301.78, 18,356.45 and 7,999.67 is: 11,039.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,301.78 : 18,356.45 = 7,999.67 : x
  2. Step 2: Convert to fraction form
    13,301.78/18,356.45 = 7,999.67/x
  3. Step 3: Cross multiply
    13,301.78x = 18,356.45 × 7,999.67
  4. Step 4: Simplify right side
    13,301.78x = 146,845,548.26
  5. Step 5: Solve for x
    x = 146,845,548.26/13,301.78
  6. Step 6: Final answer
    x = 11,039.55

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Similar ratio
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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.