Home / 14,141.39-21,212.13-4,778.91

Finding the Fourth Proportional to 14,141.39, 21,212.13 and 4,778.91

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Solution

The fourth proportional to 14,141.39, 21,212.13 and 4,778.91 is: 7,168.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,141.39 : 21,212.13 = 4,778.91 : x
  2. Step 2: Convert to fraction form
    14,141.39/21,212.13 = 4,778.91/x
  3. Step 3: Cross multiply
    14,141.39x = 21,212.13 × 4,778.91
  4. Step 4: Simplify right side
    14,141.39x = 101,370,860.18
  5. Step 5: Solve for x
    x = 101,370,860.18/14,141.39
  6. Step 6: Final answer
    x = 7,168.38

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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.