Home / 28,778,446,460.81-39,711,590,947.30-15,917,809,624.55

Finding the Fourth Proportional to 28,778,446,460.81, 39,711,590,947.30 and 15,917,809,624.55

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Solution

The fourth proportional to 28,778,446,460.81, 39,711,590,947.30 and 15,917,809,624.55 is: 21,965,103,135.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778,446,460.81 : 39,711,590,947.30 = 15,917,809,624.55 : x
  2. Step 2: Convert to fraction form
    28,778,446,460.81/39,711,590,947.30 = 15,917,809,624.55/x
  3. Step 3: Cross multiply
    28,778,446,460.81x = 39,711,590,947.30 × 15,917,809,624.55
  4. Step 4: Simplify right side
    28,778,446,460.81x = 632,121,544,587,124,670,464
  5. Step 5: Solve for x
    x = 632,121,544,587,124,670,464/28,778,446,460.81
  6. Step 6: Final answer
    x = 21,965,103,135.36

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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.