Home / 13,800,129.78-19,044,254.01-7,919,295.70

Finding the Fourth Proportional to 13,800,129.78, 19,044,254.01 and 7,919,295.70

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Solution

The fourth proportional to 13,800,129.78, 19,044,254.01 and 7,919,295.70 is: 10,928,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800,129.78 : 19,044,254.01 = 7,919,295.70 : x
  2. Step 2: Convert to fraction form
    13,800,129.78/19,044,254.01 = 7,919,295.70/x
  3. Step 3: Cross multiply
    13,800,129.78x = 19,044,254.01 × 7,919,295.70
  4. Step 4: Simplify right side
    13,800,129.78x = 150,817,078,851,504.28
  5. Step 5: Solve for x
    x = 150,817,078,851,504.28/13,800,129.78
  6. Step 6: Final answer
    x = 10,928,671.05

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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.