Home / 15,056,715.96-20,778,393.60-8,181,198.72

Finding the Fourth Proportional to 15,056,715.96, 20,778,393.60 and 8,181,198.72

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Solution

The fourth proportional to 15,056,715.96, 20,778,393.60 and 8,181,198.72 is: 11,290,122.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,056,715.96 : 20,778,393.60 = 8,181,198.72 : x
  2. Step 2: Convert to fraction form
    15,056,715.96/20,778,393.60 = 8,181,198.72/x
  3. Step 3: Cross multiply
    15,056,715.96x = 20,778,393.60 × 8,181,198.72
  4. Step 4: Simplify right side
    15,056,715.96x = 169,992,167,123,976.19
  5. Step 5: Solve for x
    x = 169,992,167,123,976.19/15,056,715.96
  6. Step 6: Final answer
    x = 11,290,122.47

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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.