Home / 12,256.40-18,365.70-9,121.70

Finding the Fourth Proportional to 12,256.40, 18,365.70 and 9,121.70

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Solution

The fourth proportional to 12,256.40, 18,365.70 and 9,121.70 is: 13,668.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,256.40 : 18,365.70 = 9,121.70 : x
  2. Step 2: Convert to fraction form
    12,256.40/18,365.70 = 9,121.70/x
  3. Step 3: Cross multiply
    12,256.40x = 18,365.70 × 9,121.70
  4. Step 4: Simplify right side
    12,256.40x = 167,526,405.69
  5. Step 5: Solve for x
    x = 167,526,405.69/12,256.40
  6. Step 6: Final answer
    x = 13,668.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.