Home / 28,643,577,645.73-39,526,356,115.25-15,782,497,885.96

Finding the Fourth Proportional to 28,643,577,645.73, 39,526,356,115.25 and 15,782,497,885.96

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Solution

The fourth proportional to 28,643,577,645.73, 39,526,356,115.25 and 15,782,497,885.96 is: 21,778,865,738.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,643,577,645.73 : 39,526,356,115.25 = 15,782,497,885.96 : x
  2. Step 2: Convert to fraction form
    28,643,577,645.73/39,526,356,115.25 = 15,782,497,885.96/x
  3. Step 3: Cross multiply
    28,643,577,645.73x = 39,526,356,115.25 × 15,782,497,885.96
  4. Step 4: Simplify right side
    28,643,577,645.73x = 623,824,631,828,801,126,400
  5. Step 5: Solve for x
    x = 623,824,631,828,801,126,400/28,643,577,645.73
  6. Step 6: Final answer
    x = 21,778,865,738.92

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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.