Home / 31,590,000.90-43,600,936.41-21,680,439.30

Finding the Fourth Proportional to 31,590,000.90, 43,600,936.41 and 21,680,439.30

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Solution

The fourth proportional to 31,590,000.90, 43,600,936.41 and 21,680,439.30 is: 29,923,628.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,590,000.90 : 43,600,936.41 = 21,680,439.30 : x
  2. Step 2: Convert to fraction form
    31,590,000.90/43,600,936.41 = 21,680,439.30/x
  3. Step 3: Cross multiply
    31,590,000.90x = 43,600,936.41 × 21,680,439.30
  4. Step 4: Simplify right side
    31,590,000.90x = 945,287,455,260,164.88
  5. Step 5: Solve for x
    x = 945,287,455,260,164.88/31,590,000.90
  6. Step 6: Final answer
    x = 29,923,628.63

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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.