Home / 14,145.71-21,218.18-4,785.66

Finding the Fourth Proportional to 14,145.71, 21,218.18 and 4,785.66

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Solution

The fourth proportional to 14,145.71, 21,218.18 and 4,785.66 is: 7,178.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.71 : 21,218.18 = 4,785.66 : x
  2. Step 2: Convert to fraction form
    14,145.71/21,218.18 = 4,785.66/x
  3. Step 3: Cross multiply
    14,145.71x = 21,218.18 × 4,785.66
  4. Step 4: Simplify right side
    14,145.71x = 101,542,971.37
  5. Step 5: Solve for x
    x = 101,542,971.37/14,145.71
  6. Step 6: Final answer
    x = 7,178.36

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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.