Home / 20,756,570.68-31,138,628.59-10,387,205.42

Finding the Fourth Proportional to 20,756,570.68, 31,138,628.59 and 10,387,205.42

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Solution

The fourth proportional to 20,756,570.68, 31,138,628.59 and 10,387,205.42 is: 15,582,696.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756,570.68 : 31,138,628.59 = 10,387,205.42 : x
  2. Step 2: Convert to fraction form
    20,756,570.68/31,138,628.59 = 10,387,205.42/x
  3. Step 3: Cross multiply
    20,756,570.68x = 31,138,628.59 × 10,387,205.42
  4. Step 4: Simplify right side
    20,756,570.68x = 323,443,331,661,414.94
  5. Step 5: Solve for x
    x = 323,443,331,661,414.94/20,756,570.68
  6. Step 6: Final answer
    x = 15,582,696.04

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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.