Home / 20,610,400.80-30,915,601.20-7,147,228.80

Finding the Fourth Proportional to 20,610,400.80, 30,915,601.20 and 7,147,228.80

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Solution

The fourth proportional to 20,610,400.80, 30,915,601.20 and 7,147,228.80 is: 10,720,843.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610,400.80 : 30,915,601.20 = 7,147,228.80 : x
  2. Step 2: Convert to fraction form
    20,610,400.80/30,915,601.20 = 7,147,228.80/x
  3. Step 3: Cross multiply
    20,610,400.80x = 30,915,601.20 × 7,147,228.80
  4. Step 4: Simplify right side
    20,610,400.80x = 220,960,875,265,954.56
  5. Step 5: Solve for x
    x = 220,960,875,265,954.56/20,610,400.80
  6. Step 6: Final answer
    x = 10,720,843.20

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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.