Home / 28,392,669.60-42,589,004.40-20,330,512.80

Finding the Fourth Proportional to 28,392,669.60, 42,589,004.40 and 20,330,512.80

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Solution

The fourth proportional to 28,392,669.60, 42,589,004.40 and 20,330,512.80 is: 30,495,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392,669.60 : 42,589,004.40 = 20,330,512.80 : x
  2. Step 2: Convert to fraction form
    28,392,669.60/42,589,004.40 = 20,330,512.80/x
  3. Step 3: Cross multiply
    28,392,669.60x = 42,589,004.40 × 20,330,512.80
  4. Step 4: Simplify right side
    28,392,669.60x = 865,856,299,093,456.38
  5. Step 5: Solve for x
    x = 865,856,299,093,456.38/28,392,669.60
  6. Step 6: Final answer
    x = 30,495,769.20

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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.