Home / 21,061,359.80-31,592,039.70-11,991,433.40

Finding the Fourth Proportional to 21,061,359.80, 31,592,039.70 and 11,991,433.40

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Solution

The fourth proportional to 21,061,359.80, 31,592,039.70 and 11,991,433.40 is: 17,987,150.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061,359.80 : 31,592,039.70 = 11,991,433.40 : x
  2. Step 2: Convert to fraction form
    21,061,359.80/31,592,039.70 = 11,991,433.40/x
  3. Step 3: Cross multiply
    21,061,359.80x = 31,592,039.70 × 11,991,433.40
  4. Step 4: Simplify right side
    21,061,359.80x = 378,833,840,032,706
  5. Step 5: Solve for x
    x = 378,833,840,032,706/21,061,359.80
  6. Step 6: Final answer
    x = 17,987,150.10

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1.5x scale

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.