Home / 20,221,305.30-30,328,967.88-7,438,820.94

Finding the Fourth Proportional to 20,221,305.30, 30,328,967.88 and 7,438,820.94

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Solution

The fourth proportional to 20,221,305.30, 30,328,967.88 and 7,438,820.94 is: 11,157,131.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221,305.30 : 30,328,967.88 = 7,438,820.94 : x
  2. Step 2: Convert to fraction form
    20,221,305.30/30,328,967.88 = 7,438,820.94/x
  3. Step 3: Cross multiply
    20,221,305.30x = 30,328,967.88 × 7,438,820.94
  4. Step 4: Simplify right side
    20,221,305.30x = 225,611,761,354,331.41
  5. Step 5: Solve for x
    x = 225,611,761,354,331.41/20,221,305.30
  6. Step 6: Final answer
    x = 11,157,131.45

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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.