Home / 20,668.41-28,521.81-11,716.74

Finding the Fourth Proportional to 20,668.41, 28,521.81 and 11,716.74

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Solution

The fourth proportional to 20,668.41, 28,521.81 and 11,716.74 is: 16,168.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.41 : 28,521.81 = 11,716.74 : x
  2. Step 2: Convert to fraction form
    20,668.41/28,521.81 = 11,716.74/x
  3. Step 3: Cross multiply
    20,668.41x = 28,521.81 × 11,716.74
  4. Step 4: Simplify right side
    20,668.41x = 334,182,632.10
  5. Step 5: Solve for x
    x = 334,182,632.10/20,668.41
  6. Step 6: Final answer
    x = 16,168.76

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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.