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Finding the Fourth Proportional to 18,883.66, 28,301.27 and 7,798.14

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Solution

The fourth proportional to 18,883.66, 28,301.27 and 7,798.14 is: 11,687.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.66 : 28,301.27 = 7,798.14 : x
  2. Step 2: Convert to fraction form
    18,883.66/28,301.27 = 7,798.14/x
  3. Step 3: Cross multiply
    18,883.66x = 28,301.27 × 7,798.14
  4. Step 4: Simplify right side
    18,883.66x = 220,697,265.64
  5. Step 5: Solve for x
    x = 220,697,265.64/18,883.66
  6. Step 6: Final answer
    x = 11,687.21

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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.