Home / 20,635.94-28,479.36-11,685.02

Finding the Fourth Proportional to 20,635.94, 28,479.36 and 11,685.02

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Solution

The fourth proportional to 20,635.94, 28,479.36 and 11,685.02 is: 16,126.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.94 : 28,479.36 = 11,685.02 : x
  2. Step 2: Convert to fraction form
    20,635.94/28,479.36 = 11,685.02/x
  3. Step 3: Cross multiply
    20,635.94x = 28,479.36 × 11,685.02
  4. Step 4: Simplify right side
    20,635.94x = 332,781,748.79
  5. Step 5: Solve for x
    x = 332,781,748.79/20,635.94
  6. Step 6: Final answer
    x = 16,126.32

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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.