Home / 21,187,105.20-31,780,657.80-16,935,577.20

Finding the Fourth Proportional to 21,187,105.20, 31,780,657.80 and 16,935,577.20

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Solution

The fourth proportional to 21,187,105.20, 31,780,657.80 and 16,935,577.20 is: 25,403,365.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187,105.20 : 31,780,657.80 = 16,935,577.20 : x
  2. Step 2: Convert to fraction form
    21,187,105.20/31,780,657.80 = 16,935,577.20/x
  3. Step 3: Cross multiply
    21,187,105.20x = 31,780,657.80 × 16,935,577.20
  4. Step 4: Simplify right side
    21,187,105.20x = 538,223,783,638,682.12
  5. Step 5: Solve for x
    x = 538,223,783,638,682.12/21,187,105.20
  6. Step 6: Final answer
    x = 25,403,365.80

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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.