Home / 15,679,708.20-21,587,944.62-13,378,634.28

Finding the Fourth Proportional to 15,679,708.20, 21,587,944.62 and 13,378,634.28

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Solution

The fourth proportional to 15,679,708.20, 21,587,944.62 and 13,378,634.28 is: 18,419,808.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679,708.20 : 21,587,944.62 = 13,378,634.28 : x
  2. Step 2: Convert to fraction form
    15,679,708.20/21,587,944.62 = 13,378,634.28/x
  3. Step 3: Cross multiply
    15,679,708.20x = 21,587,944.62 × 13,378,634.28
  4. Step 4: Simplify right side
    15,679,708.20x = 288,817,215,927,873.56
  5. Step 5: Solve for x
    x = 288,817,215,927,873.56/15,679,708.20
  6. Step 6: Final answer
    x = 18,419,808.09

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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.