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Finding the Fourth Proportional to 18,586.34, 27,880.42 and 7,491.52

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Solution

The fourth proportional to 18,586.34, 27,880.42 and 7,491.52 is: 11,237.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,586.34 : 27,880.42 = 7,491.52 : x
  2. Step 2: Convert to fraction form
    18,586.34/27,880.42 = 7,491.52/x
  3. Step 3: Cross multiply
    18,586.34x = 27,880.42 × 7,491.52
  4. Step 4: Simplify right side
    18,586.34x = 208,866,724.04
  5. Step 5: Solve for x
    x = 208,866,724.04/18,586.34
  6. Step 6: Final answer
    x = 11,237.65

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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.