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Finding the Fourth Proportional to 18,373.78, 25,318.29 and 17,381.32

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Solution

The fourth proportional to 18,373.78, 25,318.29 and 17,381.32 is: 23,950.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373.78 : 25,318.29 = 17,381.32 : x
  2. Step 2: Convert to fraction form
    18,373.78/25,318.29 = 17,381.32/x
  3. Step 3: Cross multiply
    18,373.78x = 25,318.29 × 17,381.32
  4. Step 4: Simplify right side
    18,373.78x = 440,065,300.34
  5. Step 5: Solve for x
    x = 440,065,300.34/18,373.78
  6. Step 6: Final answer
    x = 23,950.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.