Home / 18,757,213.80-28,128,822.30-7,395,311.40

Finding the Fourth Proportional to 18,757,213.80, 28,128,822.30 and 7,395,311.40

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Solution

The fourth proportional to 18,757,213.80, 28,128,822.30 and 7,395,311.40 is: 11,090,207.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757,213.80 : 28,128,822.30 = 7,395,311.40 : x
  2. Step 2: Convert to fraction form
    18,757,213.80/28,128,822.30 = 7,395,311.40/x
  3. Step 3: Cross multiply
    18,757,213.80x = 28,128,822.30 × 7,395,311.40
  4. Step 4: Simplify right side
    18,757,213.80x = 208,021,400,223,764.25
  5. Step 5: Solve for x
    x = 208,021,400,223,764.25/18,757,213.80
  6. Step 6: Final answer
    x = 11,090,207.88

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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.