Home / 28,138,647,640.88-38,832,008,397.55-15,278,829,617.68

Finding the Fourth Proportional to 28,138,647,640.88, 38,832,008,397.55 and 15,278,829,617.68

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Solution

The fourth proportional to 28,138,647,640.88, 38,832,008,397.55 and 15,278,829,617.68 is: 21,085,151,198.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138,647,640.88 : 38,832,008,397.55 = 15,278,829,617.68 : x
  2. Step 2: Convert to fraction form
    28,138,647,640.88/38,832,008,397.55 = 15,278,829,617.68/x
  3. Step 3: Cross multiply
    28,138,647,640.88x = 38,832,008,397.55 × 15,278,829,617.68
  4. Step 4: Simplify right side
    28,138,647,640.88x = 593,307,640,018,338,316,288
  5. Step 5: Solve for x
    x = 593,307,640,018,338,316,288/28,138,647,640.88
  6. Step 6: Final answer
    x = 21,085,151,198.11

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1.5x scale

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.