Home / 28,138,647,643.89-38,832,008,401.70-15,278,829,620.69

Finding the Fourth Proportional to 28,138,647,643.89, 38,832,008,401.70 and 15,278,829,620.69

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Solution

The fourth proportional to 28,138,647,643.89, 38,832,008,401.70 and 15,278,829,620.69 is: 21,085,151,202.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138,647,643.89 : 38,832,008,401.70 = 15,278,829,620.69 : x
  2. Step 2: Convert to fraction form
    28,138,647,643.89/38,832,008,401.70 = 15,278,829,620.69/x
  3. Step 3: Cross multiply
    28,138,647,643.89x = 38,832,008,401.70 × 15,278,829,620.69
  4. Step 4: Simplify right side
    28,138,647,643.89x = 593,307,640,198,506,348,544
  5. Step 5: Solve for x
    x = 593,307,640,198,506,348,544/28,138,647,643.89
  6. Step 6: Final answer
    x = 21,085,151,202.26

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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.