Home / 21,191,981.70-31,787,972.55-10,956,821.70

Finding the Fourth Proportional to 21,191,981.70, 31,787,972.55 and 10,956,821.70

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Solution

The fourth proportional to 21,191,981.70, 31,787,972.55 and 10,956,821.70 is: 16,435,232.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191,981.70 : 31,787,972.55 = 10,956,821.70 : x
  2. Step 2: Convert to fraction form
    21,191,981.70/31,787,972.55 = 10,956,821.70/x
  3. Step 3: Cross multiply
    21,191,981.70x = 31,787,972.55 × 10,956,821.70
  4. Step 4: Simplify right side
    21,191,981.70x = 348,295,147,434,844.31
  5. Step 5: Solve for x
    x = 348,295,147,434,844.31/21,191,981.70
  6. Step 6: Final answer
    x = 16,435,232.55

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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.