Home / 20,661,137.51-30,982,129.38-7,703,809.13

Finding the Fourth Proportional to 20,661,137.51, 30,982,129.38 and 7,703,809.13

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Solution

The fourth proportional to 20,661,137.51, 30,982,129.38 and 7,703,809.13 is: 11,552,142.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661,137.51 : 30,982,129.38 = 7,703,809.13 : x
  2. Step 2: Convert to fraction form
    20,661,137.51/30,982,129.38 = 7,703,809.13/x
  3. Step 3: Cross multiply
    20,661,137.51x = 30,982,129.38 × 7,703,809.13
  4. Step 4: Simplify right side
    20,661,137.51x = 238,680,411,184,485.22
  5. Step 5: Solve for x
    x = 238,680,411,184,485.22/20,661,137.51
  6. Step 6: Final answer
    x = 11,552,142.81

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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.