Home / 12,815.88-19,226.65-5,426.65

Finding the Fourth Proportional to 12,815.88, 19,226.65 and 5,426.65

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Solution

The fourth proportional to 12,815.88, 19,226.65 and 5,426.65 is: 8,141.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.88 : 19,226.65 = 5,426.65 : x
  2. Step 2: Convert to fraction form
    12,815.88/19,226.65 = 5,426.65/x
  3. Step 3: Cross multiply
    12,815.88x = 19,226.65 × 5,426.65
  4. Step 4: Simplify right side
    12,815.88x = 104,336,300.22
  5. Step 5: Solve for x
    x = 104,336,300.22/12,815.88
  6. Step 6: Final answer
    x = 8,141.17

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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.