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Finding the Fourth Proportional to 18,842.27, 28,225.71 and 11,341.71

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Solution

The fourth proportional to 18,842.27, 28,225.71 and 11,341.71 is: 16,989.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.27 : 28,225.71 = 11,341.71 : x
  2. Step 2: Convert to fraction form
    18,842.27/28,225.71 = 11,341.71/x
  3. Step 3: Cross multiply
    18,842.27x = 28,225.71 × 11,341.71
  4. Step 4: Simplify right side
    18,842.27x = 320,127,817.36
  5. Step 5: Solve for x
    x = 320,127,817.36/18,842.27
  6. Step 6: Final answer
    x = 16,989.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.