Home / 12,309.24-16,986.75-6,720.24

Finding the Fourth Proportional to 12,309.24, 16,986.75 and 6,720.24

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Solution

The fourth proportional to 12,309.24, 16,986.75 and 6,720.24 is: 9,273.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,309.24 : 16,986.75 = 6,720.24 : x
  2. Step 2: Convert to fraction form
    12,309.24/16,986.75 = 6,720.24/x
  3. Step 3: Cross multiply
    12,309.24x = 16,986.75 × 6,720.24
  4. Step 4: Simplify right side
    12,309.24x = 114,155,036.82
  5. Step 5: Solve for x
    x = 114,155,036.82/12,309.24
  6. Step 6: Final answer
    x = 9,273.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.