Home / 20,036,513.40-30,056,016.78-7,257,128.82

Finding the Fourth Proportional to 20,036,513.40, 30,056,016.78 and 7,257,128.82

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Solution

The fourth proportional to 20,036,513.40, 30,056,016.78 and 7,257,128.82 is: 10,886,144.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,036,513.40 : 30,056,016.78 = 7,257,128.82 : x
  2. Step 2: Convert to fraction form
    20,036,513.40/30,056,016.78 = 7,257,128.82/x
  3. Step 3: Cross multiply
    20,036,513.40x = 30,056,016.78 × 7,257,128.82
  4. Step 4: Simplify right side
    20,036,513.40x = 218,120,385,588,541.62
  5. Step 5: Solve for x
    x = 218,120,385,588,541.62/20,036,513.40
  6. Step 6: Final answer
    x = 10,886,144.77

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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.