Home / 18,138,697.40-27,208,046.10-12,753,428.60

Finding the Fourth Proportional to 18,138,697.40, 27,208,046.10 and 12,753,428.60

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Solution

The fourth proportional to 18,138,697.40, 27,208,046.10 and 12,753,428.60 is: 19,130,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138,697.40 : 27,208,046.10 = 12,753,428.60 : x
  2. Step 2: Convert to fraction form
    18,138,697.40/27,208,046.10 = 12,753,428.60/x
  3. Step 3: Cross multiply
    18,138,697.40x = 27,208,046.10 × 12,753,428.60
  4. Step 4: Simplify right side
    18,138,697.40x = 346,995,873,281,858.50
  5. Step 5: Solve for x
    x = 346,995,873,281,858.50/18,138,697.40
  6. Step 6: Final answer
    x = 19,130,142.90

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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.