Home / 12,956,112.90-19,424,838.15-7,278,077.70

Finding the Fourth Proportional to 12,956,112.90, 19,424,838.15 and 7,278,077.70

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Solution

The fourth proportional to 12,956,112.90, 19,424,838.15 and 7,278,077.70 is: 10,911,874.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,956,112.90 : 19,424,838.15 = 7,278,077.70 : x
  2. Step 2: Convert to fraction form
    12,956,112.90/19,424,838.15 = 7,278,077.70/x
  3. Step 3: Cross multiply
    12,956,112.90x = 19,424,838.15 × 7,278,077.70
  4. Step 4: Simplify right side
    12,956,112.90x = 141,375,481,365,624.25
  5. Step 5: Solve for x
    x = 141,375,481,365,624.25/12,956,112.90
  6. Step 6: Final answer
    x = 10,911,874.76

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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.