Home / 21,039,748.20-31,551,749.10-7,387,619.40

Finding the Fourth Proportional to 21,039,748.20, 31,551,749.10 and 7,387,619.40

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Solution

The fourth proportional to 21,039,748.20, 31,551,749.10 and 7,387,619.40 is: 11,078,664.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039,748.20 : 31,551,749.10 = 7,387,619.40 : x
  2. Step 2: Convert to fraction form
    21,039,748.20/31,551,749.10 = 7,387,619.40/x
  3. Step 3: Cross multiply
    21,039,748.20x = 31,551,749.10 × 7,387,619.40
  4. Step 4: Simplify right side
    21,039,748.20x = 233,092,313,755,092.56
  5. Step 5: Solve for x
    x = 233,092,313,755,092.56/21,039,748.20
  6. Step 6: Final answer
    x = 11,078,664.61

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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.