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Finding the Fourth Proportional to 28,824.22, 39,776.02 and 16,078.74

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Solution

The fourth proportional to 28,824.22, 39,776.02 and 16,078.74 is: 22,187.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,824.22 : 39,776.02 = 16,078.74 : x
  2. Step 2: Convert to fraction form
    28,824.22/39,776.02 = 16,078.74/x
  3. Step 3: Cross multiply
    28,824.22x = 39,776.02 × 16,078.74
  4. Step 4: Simplify right side
    28,824.22x = 639,548,283.81
  5. Step 5: Solve for x
    x = 639,548,283.81/28,824.22
  6. Step 6: Final answer
    x = 22,187.88

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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.