Home / 20,172,362.80-30,240,173.40-7,389,785.20

Finding the Fourth Proportional to 20,172,362.80, 30,240,173.40 and 7,389,785.20

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Solution

The fourth proportional to 20,172,362.80, 30,240,173.40 and 7,389,785.20 is: 11,077,947.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172,362.80 : 30,240,173.40 = 7,389,785.20 : x
  2. Step 2: Convert to fraction form
    20,172,362.80/30,240,173.40 = 7,389,785.20/x
  3. Step 3: Cross multiply
    20,172,362.80x = 30,240,173.40 × 7,389,785.20
  4. Step 4: Simplify right side
    20,172,362.80x = 223,468,385,836,753.69
  5. Step 5: Solve for x
    x = 223,468,385,836,753.69/20,172,362.80
  6. Step 6: Final answer
    x = 11,077,947.99

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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.