Home / 20,776,611.40-31,164,917.10-12,167,267.20

Finding the Fourth Proportional to 20,776,611.40, 31,164,917.10 and 12,167,267.20

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Solution

The fourth proportional to 20,776,611.40, 31,164,917.10 and 12,167,267.20 is: 18,250,900.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776,611.40 : 31,164,917.10 = 12,167,267.20 : x
  2. Step 2: Convert to fraction form
    20,776,611.40/31,164,917.10 = 12,167,267.20/x
  3. Step 3: Cross multiply
    20,776,611.40x = 31,164,917.10 × 12,167,267.20
  4. Step 4: Simplify right side
    20,776,611.40x = 379,191,873,621,549.12
  5. Step 5: Solve for x
    x = 379,191,873,621,549.12/20,776,611.40
  6. Step 6: Final answer
    x = 18,250,900.80

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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.