Home / 13,691,589.79-18,888,856.36-8,181,819.94

Finding the Fourth Proportional to 13,691,589.79, 18,888,856.36 and 8,181,819.94

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Solution

The fourth proportional to 13,691,589.79, 18,888,856.36 and 8,181,819.94 is: 11,287,602.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691,589.79 : 18,888,856.36 = 8,181,819.94 : x
  2. Step 2: Convert to fraction form
    13,691,589.79/18,888,856.36 = 8,181,819.94/x
  3. Step 3: Cross multiply
    13,691,589.79x = 18,888,856.36 × 8,181,819.94
  4. Step 4: Simplify right side
    13,691,589.79x = 154,545,221,610,043.81
  5. Step 5: Solve for x
    x = 154,545,221,610,043.81/13,691,589.79
  6. Step 6: Final answer
    x = 11,287,602.39

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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.