Home / 21,422,532.60-29,552,163.66-13,679,433.72

Finding the Fourth Proportional to 21,422,532.60, 29,552,163.66 and 13,679,433.72

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Solution

The fourth proportional to 21,422,532.60, 29,552,163.66 and 13,679,433.72 is: 18,870,638.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422,532.60 : 29,552,163.66 = 13,679,433.72 : x
  2. Step 2: Convert to fraction form
    21,422,532.60/29,552,163.66 = 13,679,433.72/x
  3. Step 3: Cross multiply
    21,422,532.60x = 29,552,163.66 × 13,679,433.72
  4. Step 4: Simplify right side
    21,422,532.60x = 404,256,864,069,562.62
  5. Step 5: Solve for x
    x = 404,256,864,069,562.62/21,422,532.60
  6. Step 6: Final answer
    x = 18,870,638.30

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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.