Home / 20,125,971.40-30,188,957.10-4,979,902.90

Finding the Fourth Proportional to 20,125,971.40, 30,188,957.10 and 4,979,902.90

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Solution

The fourth proportional to 20,125,971.40, 30,188,957.10 and 4,979,902.90 is: 7,469,854.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125,971.40 : 30,188,957.10 = 4,979,902.90 : x
  2. Step 2: Convert to fraction form
    20,125,971.40/30,188,957.10 = 4,979,902.90/x
  3. Step 3: Cross multiply
    20,125,971.40x = 30,188,957.10 × 4,979,902.90
  4. Step 4: Simplify right side
    20,125,971.40x = 150,338,075,010,265.59
  5. Step 5: Solve for x
    x = 150,338,075,010,265.59/20,125,971.40
  6. Step 6: Final answer
    x = 7,469,854.35

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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.