Home / 21,387,825.40-32,081,738.10-20,631,998.20

Finding the Fourth Proportional to 21,387,825.40, 32,081,738.10 and 20,631,998.20

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Solution

The fourth proportional to 21,387,825.40, 32,081,738.10 and 20,631,998.20 is: 30,947,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387,825.40 : 32,081,738.10 = 20,631,998.20 : x
  2. Step 2: Convert to fraction form
    21,387,825.40/32,081,738.10 = 20,631,998.20/x
  3. Step 3: Cross multiply
    21,387,825.40x = 32,081,738.10 × 20,631,998.20
  4. Step 4: Simplify right side
    21,387,825.40x = 661,910,362,732,071.38
  5. Step 5: Solve for x
    x = 661,910,362,732,071.38/21,387,825.40
  6. Step 6: Final answer
    x = 30,947,997.30

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1.5x scale

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.