Home / 21,000,991.20-31,501,486.80-16,749,463.20

Finding the Fourth Proportional to 21,000,991.20, 31,501,486.80 and 16,749,463.20

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Solution

The fourth proportional to 21,000,991.20, 31,501,486.80 and 16,749,463.20 is: 25,124,194.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,991.20 : 31,501,486.80 = 16,749,463.20 : x
  2. Step 2: Convert to fraction form
    21,000,991.20/31,501,486.80 = 16,749,463.20/x
  3. Step 3: Cross multiply
    21,000,991.20x = 31,501,486.80 × 16,749,463.20
  4. Step 4: Simplify right side
    21,000,991.20x = 527,632,993,901,885.75
  5. Step 5: Solve for x
    x = 527,632,993,901,885.75/21,000,991.20
  6. Step 6: Final answer
    x = 25,124,194.80

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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.