Home / 21,404,347.13-29,489,519.30-20,383,980.41

Finding the Fourth Proportional to 21,404,347.13, 29,489,519.30 and 20,383,980.41

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Solution

The fourth proportional to 21,404,347.13, 29,489,519.30 and 20,383,980.41 is: 28,083,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,404,347.13 : 29,489,519.30 = 20,383,980.41 : x
  2. Step 2: Convert to fraction form
    21,404,347.13/29,489,519.30 = 20,383,980.41/x
  3. Step 3: Cross multiply
    21,404,347.13x = 29,489,519.30 × 20,383,980.41
  4. Step 4: Simplify right side
    21,404,347.13x = 601,113,783,683,320.88
  5. Step 5: Solve for x
    x = 601,113,783,683,320.88/21,404,347.13
  6. Step 6: Final answer
    x = 28,083,724.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.