Home / 15,161.39-20,923.37-8,447.00

Finding the Fourth Proportional to 15,161.39, 20,923.37 and 8,447.00

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Solution

The fourth proportional to 15,161.39, 20,923.37 and 8,447.00 is: 11,657.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,161.39 : 20,923.37 = 8,447.00 : x
  2. Step 2: Convert to fraction form
    15,161.39/20,923.37 = 8,447.00/x
  3. Step 3: Cross multiply
    15,161.39x = 20,923.37 × 8,447.00
  4. Step 4: Simplify right side
    15,161.39x = 176,739,559.54
  5. Step 5: Solve for x
    x = 176,739,559.54/15,161.39
  6. Step 6: Final answer
    x = 11,657.22

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Double scale
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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.