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Finding the Fourth Proportional to 28,117.54, 38,801.04 and 16,788.88

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Solution

The fourth proportional to 28,117.54, 38,801.04 and 16,788.88 is: 23,167.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.54 : 38,801.04 = 16,788.88 : x
  2. Step 2: Convert to fraction form
    28,117.54/38,801.04 = 16,788.88/x
  3. Step 3: Cross multiply
    28,117.54x = 38,801.04 × 16,788.88
  4. Step 4: Simplify right side
    28,117.54x = 651,426,004.44
  5. Step 5: Solve for x
    x = 651,426,004.44/28,117.54
  6. Step 6: Final answer
    x = 23,167.96

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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.