Home / 12,782,636.02-17,640,419.70-6,981,691.42

Finding the Fourth Proportional to 12,782,636.02, 17,640,419.70 and 6,981,691.42

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Solution

The fourth proportional to 12,782,636.02, 17,640,419.70 and 6,981,691.42 is: 9,634,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782,636.02 : 17,640,419.70 = 6,981,691.42 : x
  2. Step 2: Convert to fraction form
    12,782,636.02/17,640,419.70 = 6,981,691.42/x
  3. Step 3: Cross multiply
    12,782,636.02x = 17,640,419.70 × 6,981,691.42
  4. Step 4: Simplify right side
    12,782,636.02x = 123,159,966,864,688.97
  5. Step 5: Solve for x
    x = 123,159,966,864,688.97/12,782,636.02
  6. Step 6: Final answer
    x = 9,634,942.80

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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.