Home / 12,867.72-19,296.66-7,021.20

Finding the Fourth Proportional to 12,867.72, 19,296.66 and 7,021.20

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Solution

The fourth proportional to 12,867.72, 19,296.66 and 7,021.20 is: 10,529.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,867.72 : 19,296.66 = 7,021.20 : x
  2. Step 2: Convert to fraction form
    12,867.72/19,296.66 = 7,021.20/x
  3. Step 3: Cross multiply
    12,867.72x = 19,296.66 × 7,021.20
  4. Step 4: Simplify right side
    12,867.72x = 135,485,709.19
  5. Step 5: Solve for x
    x = 135,485,709.19/12,867.72
  6. Step 6: Final answer
    x = 10,529.12

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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.