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Finding the Fourth Proportional to 18,888.48, 28,384.56 and 17,814.96

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Solution

The fourth proportional to 18,888.48, 28,384.56 and 17,814.96 is: 26,771.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.48 : 28,384.56 = 17,814.96 : x
  2. Step 2: Convert to fraction form
    18,888.48/28,384.56 = 17,814.96/x
  3. Step 3: Cross multiply
    18,888.48x = 28,384.56 × 17,814.96
  4. Step 4: Simplify right side
    18,888.48x = 505,669,801.02
  5. Step 5: Solve for x
    x = 505,669,801.02/18,888.48
  6. Step 6: Final answer
    x = 26,771.33

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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.