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Finding the Fourth Proportional to 18,307.53, 27,475.88 and 7,219.44

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Solution

The fourth proportional to 18,307.53, 27,475.88 and 7,219.44 is: 10,834.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.53 : 27,475.88 = 7,219.44 : x
  2. Step 2: Convert to fraction form
    18,307.53/27,475.88 = 7,219.44/x
  3. Step 3: Cross multiply
    18,307.53x = 27,475.88 × 7,219.44
  4. Step 4: Simplify right side
    18,307.53x = 198,360,431.01
  5. Step 5: Solve for x
    x = 198,360,431.01/18,307.53
  6. Step 6: Final answer
    x = 10,834.91

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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.