Home / 21,060,097.20-31,590,145.80-12,550,042.80

Finding the Fourth Proportional to 21,060,097.20, 31,590,145.80 and 12,550,042.80

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Solution

The fourth proportional to 21,060,097.20, 31,590,145.80 and 12,550,042.80 is: 18,825,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060,097.20 : 31,590,145.80 = 12,550,042.80 : x
  2. Step 2: Convert to fraction form
    21,060,097.20/31,590,145.80 = 12,550,042.80/x
  3. Step 3: Cross multiply
    21,060,097.20x = 31,590,145.80 × 12,550,042.80
  4. Step 4: Simplify right side
    21,060,097.20x = 396,457,681,848,240.25
  5. Step 5: Solve for x
    x = 396,457,681,848,240.25/21,060,097.20
  6. Step 6: Final answer
    x = 18,825,064.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.