Home / 21,981,788.61-30,338,500.39-12,195,385.72

Finding the Fourth Proportional to 21,981,788.61, 30,338,500.39 and 12,195,385.72

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Solution

The fourth proportional to 21,981,788.61, 30,338,500.39 and 12,195,385.72 is: 16,831,647.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981,788.61 : 30,338,500.39 = 12,195,385.72 : x
  2. Step 2: Convert to fraction form
    21,981,788.61/30,338,500.39 = 12,195,385.72/x
  3. Step 3: Cross multiply
    21,981,788.61x = 30,338,500.39 × 12,195,385.72
  4. Step 4: Simplify right side
    21,981,788.61x = 369,989,714,316,085.69
  5. Step 5: Solve for x
    x = 369,989,714,316,085.69/21,981,788.61
  6. Step 6: Final answer
    x = 16,831,647.37

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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.