Home / 15,646,997.87-21,594,149.73-8,679,921.70

Finding the Fourth Proportional to 15,646,997.87, 21,594,149.73 and 8,679,921.70

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Solution

The fourth proportional to 15,646,997.87, 21,594,149.73 and 8,679,921.70 is: 11,979,009.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,646,997.87 : 21,594,149.73 = 8,679,921.70 : x
  2. Step 2: Convert to fraction form
    15,646,997.87/21,594,149.73 = 8,679,921.70/x
  3. Step 3: Cross multiply
    15,646,997.87x = 21,594,149.73 × 8,679,921.70
  4. Step 4: Simplify right side
    15,646,997.87x = 187,435,528,834,476.12
  5. Step 5: Solve for x
    x = 187,435,528,834,476.12/15,646,997.87
  6. Step 6: Final answer
    x = 11,979,009.03

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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.