Home / 28,815.24-43,165.35-13,979.15

Finding the Fourth Proportional to 28,815.24, 43,165.35 and 13,979.15

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Solution

The fourth proportional to 28,815.24, 43,165.35 and 13,979.15 is: 20,940.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.24 : 43,165.35 = 13,979.15 : x
  2. Step 2: Convert to fraction form
    28,815.24/43,165.35 = 13,979.15/x
  3. Step 3: Cross multiply
    28,815.24x = 43,165.35 × 13,979.15
  4. Step 4: Simplify right side
    28,815.24x = 603,414,686.63
  5. Step 5: Solve for x
    x = 603,414,686.63/28,815.24
  6. Step 6: Final answer
    x = 20,940.82

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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.