Home / 12,981,205.38-19,438,848.44-7,790,547.58

Finding the Fourth Proportional to 12,981,205.38, 19,438,848.44 and 7,790,547.58

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Solution

The fourth proportional to 12,981,205.38, 19,438,848.44 and 7,790,547.58 is: 11,666,040.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981,205.38 : 19,438,848.44 = 7,790,547.58 : x
  2. Step 2: Convert to fraction form
    12,981,205.38/19,438,848.44 = 7,790,547.58/x
  3. Step 3: Cross multiply
    12,981,205.38x = 19,438,848.44 × 7,790,547.58
  4. Step 4: Simplify right side
    12,981,205.38x = 151,439,273,613,893.47
  5. Step 5: Solve for x
    x = 151,439,273,613,893.47/12,981,205.38
  6. Step 6: Final answer
    x = 11,666,040.95

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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.