Home / 21,305,131.79-31,962,433.76-9,939,380.27

Finding the Fourth Proportional to 21,305,131.79, 31,962,433.76 and 9,939,380.27

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Solution

The fourth proportional to 21,305,131.79, 31,962,433.76 and 9,939,380.27 is: 14,911,279.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305,131.79 : 31,962,433.76 = 9,939,380.27 : x
  2. Step 2: Convert to fraction form
    21,305,131.79/31,962,433.76 = 9,939,380.27/x
  3. Step 3: Cross multiply
    21,305,131.79x = 31,962,433.76 × 9,939,380.27
  4. Step 4: Simplify right side
    21,305,131.79x = 317,686,783,600,080.50
  5. Step 5: Solve for x
    x = 317,686,783,600,080.50/21,305,131.79
  6. Step 6: Final answer
    x = 14,911,279.91

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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.