Home / 10,209,205.20-15,313,807.80-5,414,426.40

Finding the Fourth Proportional to 10,209,205.20, 15,313,807.80 and 5,414,426.40

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Solution

The fourth proportional to 10,209,205.20, 15,313,807.80 and 5,414,426.40 is: 8,121,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,209,205.20 : 15,313,807.80 = 5,414,426.40 : x
  2. Step 2: Convert to fraction form
    10,209,205.20/15,313,807.80 = 5,414,426.40/x
  3. Step 3: Cross multiply
    10,209,205.20x = 15,313,807.80 × 5,414,426.40
  4. Step 4: Simplify right side
    10,209,205.20x = 82,915,485,236,845.94
  5. Step 5: Solve for x
    x = 82,915,485,236,845.94/10,209,205.20
  6. Step 6: Final answer
    x = 8,121,639.60

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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.