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Finding the Fourth Proportional to 28,486.49, 39,310.72 and 16,549.72

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Solution

The fourth proportional to 28,486.49, 39,310.72 and 16,549.72 is: 22,838.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,486.49 : 39,310.72 = 16,549.72 : x
  2. Step 2: Convert to fraction form
    28,486.49/39,310.72 = 16,549.72/x
  3. Step 3: Cross multiply
    28,486.49x = 39,310.72 × 16,549.72
  4. Step 4: Simplify right side
    28,486.49x = 650,581,269.35
  5. Step 5: Solve for x
    x = 650,581,269.35/28,486.49
  6. Step 6: Final answer
    x = 22,838.24

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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.