Home / 22,668.72-31,284.84-13,240.32

Finding the Fourth Proportional to 22,668.72, 31,284.84 and 13,240.32

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Solution

The fourth proportional to 22,668.72, 31,284.84 and 13,240.32 is: 18,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,668.72 : 31,284.84 = 13,240.32 : x
  2. Step 2: Convert to fraction form
    22,668.72/31,284.84 = 13,240.32/x
  3. Step 3: Cross multiply
    22,668.72x = 31,284.84 × 13,240.32
  4. Step 4: Simplify right side
    22,668.72x = 414,221,292.75
  5. Step 5: Solve for x
    x = 414,221,292.75/22,668.72
  6. Step 6: Final answer
    x = 18,272.81

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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.