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Finding the Fourth Proportional to 15,361.38, 23,019.12 and 12,607.38

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Solution

The fourth proportional to 15,361.38, 23,019.12 and 12,607.38 is: 18,892.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,361.38 : 23,019.12 = 12,607.38 : x
  2. Step 2: Convert to fraction form
    15,361.38/23,019.12 = 12,607.38/x
  3. Step 3: Cross multiply
    15,361.38x = 23,019.12 × 12,607.38
  4. Step 4: Simplify right side
    15,361.38x = 290,210,793.11
  5. Step 5: Solve for x
    x = 290,210,793.11/15,361.38
  6. Step 6: Final answer
    x = 18,892.23

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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.