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Finding the Fourth Proportional to 18,598.53, 28,025.65 and 15,383.64

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Solution

The fourth proportional to 18,598.53, 28,025.65 and 15,383.64 is: 23,181.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,598.53 : 28,025.65 = 15,383.64 : x
  2. Step 2: Convert to fraction form
    18,598.53/28,025.65 = 15,383.64/x
  3. Step 3: Cross multiply
    18,598.53x = 28,025.65 × 15,383.64
  4. Step 4: Simplify right side
    18,598.53x = 431,136,390.51
  5. Step 5: Solve for x
    x = 431,136,390.51/18,598.53
  6. Step 6: Final answer
    x = 23,181.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.