Home / 20,634.57-28,476.36-11,681.91

Finding the Fourth Proportional to 20,634.57, 28,476.36 and 11,681.91

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Solution

The fourth proportional to 20,634.57, 28,476.36 and 11,681.91 is: 16,121.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.57 : 28,476.36 = 11,681.91 : x
  2. Step 2: Convert to fraction form
    20,634.57/28,476.36 = 11,681.91/x
  3. Step 3: Cross multiply
    20,634.57x = 28,476.36 × 11,681.91
  4. Step 4: Simplify right side
    20,634.57x = 332,658,274.65
  5. Step 5: Solve for x
    x = 332,658,274.65/20,634.57
  6. Step 6: Final answer
    x = 16,121.41

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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.