Home / 20,989,171.02-28,964,662.38-11,696,536.35

Finding the Fourth Proportional to 20,989,171.02, 28,964,662.38 and 11,696,536.35

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Solution

The fourth proportional to 20,989,171.02, 28,964,662.38 and 11,696,536.35 is: 16,141,000.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989,171.02 : 28,964,662.38 = 11,696,536.35 : x
  2. Step 2: Convert to fraction form
    20,989,171.02/28,964,662.38 = 11,696,536.35/x
  3. Step 3: Cross multiply
    20,989,171.02x = 28,964,662.38 × 11,696,536.35
  4. Step 4: Simplify right side
    20,989,171.02x = 338,786,226,393,147.50
  5. Step 5: Solve for x
    x = 338,786,226,393,147.50/20,989,171.02
  6. Step 6: Final answer
    x = 16,141,000.81

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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.