Home / 21,060,074.20-31,590,111.30-12,550,019.80

Finding the Fourth Proportional to 21,060,074.20, 31,590,111.30 and 12,550,019.80

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Solution

The fourth proportional to 21,060,074.20, 31,590,111.30 and 12,550,019.80 is: 18,825,029.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060,074.20 : 31,590,111.30 = 12,550,019.80 : x
  2. Step 2: Convert to fraction form
    21,060,074.20/31,590,111.30 = 12,550,019.80/x
  3. Step 3: Cross multiply
    21,060,074.20x = 31,590,111.30 × 12,550,019.80
  4. Step 4: Simplify right side
    21,060,074.20x = 396,456,522,299,203.75
  5. Step 5: Solve for x
    x = 396,456,522,299,203.75/21,060,074.20
  6. Step 6: Final answer
    x = 18,825,029.70

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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.