Home / 12,356,789.54-18,538,271.58-8,720,619.15

Finding the Fourth Proportional to 12,356,789.54, 18,538,271.58 and 8,720,619.15

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Solution

The fourth proportional to 12,356,789.54, 18,538,271.58 and 8,720,619.15 is: 13,083,107.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356,789.54 : 18,538,271.58 = 8,720,619.15 : x
  2. Step 2: Convert to fraction form
    12,356,789.54/18,538,271.58 = 8,720,619.15/x
  3. Step 3: Cross multiply
    12,356,789.54x = 18,538,271.58 × 8,720,619.15
  4. Step 4: Simplify right side
    12,356,789.54x = 161,665,206,148,448.75
  5. Step 5: Solve for x
    x = 161,665,206,148,448.75/12,356,789.54
  6. Step 6: Final answer
    x = 13,083,107.52

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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.