Home / 20,128,513.20-30,192,769.80-7,358,182.80

Finding the Fourth Proportional to 20,128,513.20, 30,192,769.80 and 7,358,182.80

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Solution

The fourth proportional to 20,128,513.20, 30,192,769.80 and 7,358,182.80 is: 11,037,274.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128,513.20 : 30,192,769.80 = 7,358,182.80 : x
  2. Step 2: Convert to fraction form
    20,128,513.20/30,192,769.80 = 7,358,182.80/x
  3. Step 3: Cross multiply
    20,128,513.20x = 30,192,769.80 × 7,358,182.80
  4. Step 4: Simplify right side
    20,128,513.20x = 222,163,919,426,719.44
  5. Step 5: Solve for x
    x = 222,163,919,426,719.44/20,128,513.20
  6. Step 6: Final answer
    x = 11,037,274.20

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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.