Home / 14,145.57-21,218.42-4,785.68

Finding the Fourth Proportional to 14,145.57, 21,218.42 and 4,785.68

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Solution

The fourth proportional to 14,145.57, 21,218.42 and 4,785.68 is: 7,178.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.57 : 21,218.42 = 4,785.68 : x
  2. Step 2: Convert to fraction form
    14,145.57/21,218.42 = 4,785.68/x
  3. Step 3: Cross multiply
    14,145.57x = 21,218.42 × 4,785.68
  4. Step 4: Simplify right side
    14,145.57x = 101,544,633.24
  5. Step 5: Solve for x
    x = 101,544,633.24/14,145.57
  6. Step 6: Final answer
    x = 7,178.55

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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.