Home / 21,131,381.40-31,703,880.96-9,620,967.12

Finding the Fourth Proportional to 21,131,381.40, 31,703,880.96 and 9,620,967.12

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Solution

The fourth proportional to 21,131,381.40, 31,703,880.96 and 9,620,967.12 is: 14,434,550.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131,381.40 : 31,703,880.96 = 9,620,967.12 : x
  2. Step 2: Convert to fraction form
    21,131,381.40/31,703,880.96 = 9,620,967.12/x
  3. Step 3: Cross multiply
    21,131,381.40x = 31,703,880.96 × 9,620,967.12
  4. Step 4: Simplify right side
    21,131,381.40x = 305,021,996,292,554
  5. Step 5: Solve for x
    x = 305,021,996,292,554/21,131,381.40
  6. Step 6: Final answer
    x = 14,434,550.71

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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.