Home / 18,723,619.20-28,085,428.80-10,220,563.20

Finding the Fourth Proportional to 18,723,619.20, 28,085,428.80 and 10,220,563.20

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Solution

The fourth proportional to 18,723,619.20, 28,085,428.80 and 10,220,563.20 is: 15,330,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723,619.20 : 28,085,428.80 = 10,220,563.20 : x
  2. Step 2: Convert to fraction form
    18,723,619.20/28,085,428.80 = 10,220,563.20/x
  3. Step 3: Cross multiply
    18,723,619.20x = 28,085,428.80 × 10,220,563.20
  4. Step 4: Simplify right side
    18,723,619.20x = 287,048,900,049,500.12
  5. Step 5: Solve for x
    x = 287,048,900,049,500.12/18,723,619.20
  6. Step 6: Final answer
    x = 15,330,844.80

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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.