Home / 20,611,999.80-30,917,999.70-7,148,827.80

Finding the Fourth Proportional to 20,611,999.80, 30,917,999.70 and 7,148,827.80

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Solution

The fourth proportional to 20,611,999.80, 30,917,999.70 and 7,148,827.80 is: 10,723,241.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611,999.80 : 30,917,999.70 = 7,148,827.80 : x
  2. Step 2: Convert to fraction form
    20,611,999.80/30,917,999.70 = 7,148,827.80/x
  3. Step 3: Cross multiply
    20,611,999.80x = 30,917,999.70 × 7,148,827.80
  4. Step 4: Simplify right side
    20,611,999.80x = 221,027,455,775,751.66
  5. Step 5: Solve for x
    x = 221,027,455,775,751.66/20,611,999.80
  6. Step 6: Final answer
    x = 10,723,241.70

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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.