Home / 21,922,021.60-32,912,581.20-12,833,432.80

Finding the Fourth Proportional to 21,922,021.60, 32,912,581.20 and 12,833,432.80

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Solution

The fourth proportional to 21,922,021.60, 32,912,581.20 and 12,833,432.80 is: 19,267,447.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,922,021.60 : 32,912,581.20 = 12,833,432.80 : x
  2. Step 2: Convert to fraction form
    21,922,021.60/32,912,581.20 = 12,833,432.80/x
  3. Step 3: Cross multiply
    21,922,021.60x = 32,912,581.20 × 12,833,432.80
  4. Step 4: Simplify right side
    21,922,021.60x = 422,381,399,104,743.38
  5. Step 5: Solve for x
    x = 422,381,399,104,743.38/21,922,021.60
  6. Step 6: Final answer
    x = 19,267,447.45

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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.