Home / 21,029,124.80-31,543,687.20-9,691,716.80

Finding the Fourth Proportional to 21,029,124.80, 31,543,687.20 and 9,691,716.80

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Solution

The fourth proportional to 21,029,124.80, 31,543,687.20 and 9,691,716.80 is: 14,537,575.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029,124.80 : 31,543,687.20 = 9,691,716.80 : x
  2. Step 2: Convert to fraction form
    21,029,124.80/31,543,687.20 = 9,691,716.80/x
  3. Step 3: Cross multiply
    21,029,124.80x = 31,543,687.20 × 9,691,716.80
  4. Step 4: Simplify right side
    21,029,124.80x = 305,712,483,170,185
  5. Step 5: Solve for x
    x = 305,712,483,170,185/21,029,124.80
  6. Step 6: Final answer
    x = 14,537,575.20

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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.