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Finding the Fourth Proportional to 28,142.04, 38,836.02 and 16,207.68

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Solution

The fourth proportional to 28,142.04, 38,836.02 and 16,207.68 is: 22,366.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.04 : 38,836.02 = 16,207.68 : x
  2. Step 2: Convert to fraction form
    28,142.04/38,836.02 = 16,207.68/x
  3. Step 3: Cross multiply
    28,142.04x = 38,836.02 × 16,207.68
  4. Step 4: Simplify right side
    28,142.04x = 629,441,784.63
  5. Step 5: Solve for x
    x = 629,441,784.63/28,142.04
  6. Step 6: Final answer
    x = 22,366.60

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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.