Home / 14,145.78-21,218.67-4,286.06

Finding the Fourth Proportional to 14,145.78, 21,218.67 and 4,286.06

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Solution

The fourth proportional to 14,145.78, 21,218.67 and 4,286.06 is: 6,429.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.78 : 21,218.67 = 4,286.06 : x
  2. Step 2: Convert to fraction form
    14,145.78/21,218.67 = 4,286.06/x
  3. Step 3: Cross multiply
    14,145.78x = 21,218.67 × 4,286.06
  4. Step 4: Simplify right side
    14,145.78x = 90,944,386.65
  5. Step 5: Solve for x
    x = 90,944,386.65/14,145.78
  6. Step 6: Final answer
    x = 6,429.08

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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.