Home / 20,643,209.89-30,947,493.80-9,126,817.81

Finding the Fourth Proportional to 20,643,209.89, 30,947,493.80 and 9,126,817.81

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Solution

The fourth proportional to 20,643,209.89, 30,947,493.80 and 9,126,817.81 is: 13,682,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643,209.89 : 30,947,493.80 = 9,126,817.81 : x
  2. Step 2: Convert to fraction form
    20,643,209.89/30,947,493.80 = 9,126,817.81/x
  3. Step 3: Cross multiply
    20,643,209.89x = 30,947,493.80 × 9,126,817.81
  4. Step 4: Simplify right side
    20,643,209.89x = 282,452,137,543,070.50
  5. Step 5: Solve for x
    x = 282,452,137,543,070.50/20,643,209.89
  6. Step 6: Final answer
    x = 13,682,568.70

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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.