Home / 18,467,999.80-27,701,999.70-12,421,382.20

Finding the Fourth Proportional to 18,467,999.80, 27,701,999.70 and 12,421,382.20

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Solution

The fourth proportional to 18,467,999.80, 27,701,999.70 and 12,421,382.20 is: 18,632,073.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,467,999.80 : 27,701,999.70 = 12,421,382.20 : x
  2. Step 2: Convert to fraction form
    18,467,999.80/27,701,999.70 = 12,421,382.20/x
  3. Step 3: Cross multiply
    18,467,999.80x = 27,701,999.70 × 12,421,382.20
  4. Step 4: Simplify right side
    18,467,999.80x = 344,097,125,977,985.31
  5. Step 5: Solve for x
    x = 344,097,125,977,985.31/18,467,999.80
  6. Step 6: Final answer
    x = 18,632,073.30

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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.