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Finding the Fourth Proportional to 28,486.40, 39,310.08 and 16,550.08

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Solution

The fourth proportional to 28,486.40, 39,310.08 and 16,550.08 is: 22,838.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,486.40 : 39,310.08 = 16,550.08 : x
  2. Step 2: Convert to fraction form
    28,486.40/39,310.08 = 16,550.08/x
  3. Step 3: Cross multiply
    28,486.40x = 39,310.08 × 16,550.08
  4. Step 4: Simplify right side
    28,486.40x = 650,584,968.81
  5. Step 5: Solve for x
    x = 650,584,968.81/28,486.40
  6. Step 6: Final answer
    x = 22,838.44

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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.