Home / 28,432,686,382.89-39,238,340,597.83-15,745,422,048.78

Finding the Fourth Proportional to 28,432,686,382.89, 39,238,340,597.83 and 15,745,422,048.78

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Solution

The fourth proportional to 28,432,686,382.89, 39,238,340,597.83 and 15,745,422,048.78 is: 21,729,365,452.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432,686,382.89 : 39,238,340,597.83 = 15,745,422,048.78 : x
  2. Step 2: Convert to fraction form
    28,432,686,382.89/39,238,340,597.83 = 15,745,422,048.78/x
  3. Step 3: Cross multiply
    28,432,686,382.89x = 39,238,340,597.83 × 15,745,422,048.78
  4. Step 4: Simplify right side
    28,432,686,382.89x = 617,824,233,206,533,193,728
  5. Step 5: Solve for x
    x = 617,824,233,206,533,193,728/28,432,686,382.89
  6. Step 6: Final answer
    x = 21,729,365,452.37

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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.