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Finding the Fourth Proportional to 18,289.70, 27,437.17 and 5,640.53

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Solution

The fourth proportional to 18,289.70, 27,437.17 and 5,640.53 is: 8,461.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289.70 : 27,437.17 = 5,640.53 : x
  2. Step 2: Convert to fraction form
    18,289.70/27,437.17 = 5,640.53/x
  3. Step 3: Cross multiply
    18,289.70x = 27,437.17 × 5,640.53
  4. Step 4: Simplify right side
    18,289.70x = 154,760,152.30
  5. Step 5: Solve for x
    x = 154,760,152.30/18,289.70
  6. Step 6: Final answer
    x = 8,461.60

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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.