Home / 28,686.20-43,029.30-7,626.20

Finding the Fourth Proportional to 28,686.20, 43,029.30 and 7,626.20

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Solution

The fourth proportional to 28,686.20, 43,029.30 and 7,626.20 is: 11,439.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.20 : 43,029.30 = 7,626.20 : x
  2. Step 2: Convert to fraction form
    28,686.20/43,029.30 = 7,626.20/x
  3. Step 3: Cross multiply
    28,686.20x = 43,029.30 × 7,626.20
  4. Step 4: Simplify right side
    28,686.20x = 328,150,047.66
  5. Step 5: Solve for x
    x = 328,150,047.66/28,686.20
  6. Step 6: Final answer
    x = 11,439.30

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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.