Home / 20,118,989.40-30,186,357.30-7,340,785.80

Finding the Fourth Proportional to 20,118,989.40, 30,186,357.30 and 7,340,785.80

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Solution

The fourth proportional to 20,118,989.40, 30,186,357.30 and 7,340,785.80 is: 11,014,051.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118,989.40 : 30,186,357.30 = 7,340,785.80 : x
  2. Step 2: Convert to fraction form
    20,118,989.40/30,186,357.30 = 7,340,785.80/x
  3. Step 3: Cross multiply
    20,118,989.40x = 30,186,357.30 × 7,340,785.80
  4. Step 4: Simplify right side
    20,118,989.40x = 221,591,583,021,566.34
  5. Step 5: Solve for x
    x = 221,591,583,021,566.34/20,118,989.40
  6. Step 6: Final answer
    x = 11,014,051.38

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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.