Home / 12,912,951.60-17,820,678.83-7,111,731.87

Finding the Fourth Proportional to 12,912,951.60, 17,820,678.83 and 7,111,731.87

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Solution

The fourth proportional to 12,912,951.60, 17,820,678.83 and 7,111,731.87 is: 9,814,633.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912,951.60 : 17,820,678.83 = 7,111,731.87 : x
  2. Step 2: Convert to fraction form
    12,912,951.60/17,820,678.83 = 7,111,731.87/x
  3. Step 3: Cross multiply
    12,912,951.60x = 17,820,678.83 × 7,111,731.87
  4. Step 4: Simplify right side
    12,912,951.60x = 126,735,889,544,786.66
  5. Step 5: Solve for x
    x = 126,735,889,544,786.66/12,912,951.60
  6. Step 6: Final answer
    x = 9,814,633.67

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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.