Home / 13,178.54-18,177.42-8,071.67

Finding the Fourth Proportional to 13,178.54, 18,177.42 and 8,071.67

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Solution

The fourth proportional to 13,178.54, 18,177.42 and 8,071.67 is: 11,133.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.54 : 18,177.42 = 8,071.67 : x
  2. Step 2: Convert to fraction form
    13,178.54/18,177.42 = 8,071.67/x
  3. Step 3: Cross multiply
    13,178.54x = 18,177.42 × 8,071.67
  4. Step 4: Simplify right side
    13,178.54x = 146,722,135.69
  5. Step 5: Solve for x
    x = 146,722,135.69/13,178.54
  6. Step 6: Final answer
    x = 11,133.41

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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.