Home / 21,291,003.80-31,936,505.70-12,305,058.20

Finding the Fourth Proportional to 21,291,003.80, 31,936,505.70 and 12,305,058.20

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Solution

The fourth proportional to 21,291,003.80, 31,936,505.70 and 12,305,058.20 is: 18,457,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291,003.80 : 31,936,505.70 = 12,305,058.20 : x
  2. Step 2: Convert to fraction form
    21,291,003.80/31,936,505.70 = 12,305,058.20/x
  3. Step 3: Cross multiply
    21,291,003.80x = 31,936,505.70 × 12,305,058.20
  4. Step 4: Simplify right side
    21,291,003.80x = 392,980,561,343,131.69
  5. Step 5: Solve for x
    x = 392,980,561,343,131.69/21,291,003.80
  6. Step 6: Final answer
    x = 18,457,587.30

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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.