Home / 12,892,451.20-19,317,681.60-9,491,228.80

Finding the Fourth Proportional to 12,892,451.20, 19,317,681.60 and 9,491,228.80

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Solution

The fourth proportional to 12,892,451.20, 19,317,681.60 and 9,491,228.80 is: 14,221,386.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,892,451.20 : 19,317,681.60 = 9,491,228.80 : x
  2. Step 2: Convert to fraction form
    12,892,451.20/19,317,681.60 = 9,491,228.80/x
  3. Step 3: Cross multiply
    12,892,451.20x = 19,317,681.60 × 9,491,228.80
  4. Step 4: Simplify right side
    12,892,451.20x = 183,348,535,951,150.09
  5. Step 5: Solve for x
    x = 183,348,535,951,150.09/12,892,451.20
  6. Step 6: Final answer
    x = 14,221,386.85

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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.