Home / 20,657,455.80-30,959,611.65-12,561,837.90

Finding the Fourth Proportional to 20,657,455.80, 30,959,611.65 and 12,561,837.90

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Solution

The fourth proportional to 20,657,455.80, 30,959,611.65 and 12,561,837.90 is: 18,826,598.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657,455.80 : 30,959,611.65 = 12,561,837.90 : x
  2. Step 2: Convert to fraction form
    20,657,455.80/30,959,611.65 = 12,561,837.90/x
  3. Step 3: Cross multiply
    20,657,455.80x = 30,959,611.65 × 12,561,837.90
  4. Step 4: Simplify right side
    20,657,455.80x = 388,909,622,994,251.50
  5. Step 5: Solve for x
    x = 388,909,622,994,251.50/20,657,455.80
  6. Step 6: Final answer
    x = 18,826,598.34

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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.