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Finding the Fourth Proportional to 18,155.21, 27,219 and 9,384.53

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Solution

The fourth proportional to 18,155.21, 27,219 and 9,384.53 is: 14,069.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.21 : 27,219 = 9,384.53 : x
  2. Step 2: Convert to fraction form
    18,155.21/27,219 = 9,384.53/x
  3. Step 3: Cross multiply
    18,155.21x = 27,219 × 9,384.53
  4. Step 4: Simplify right side
    18,155.21x = 255,437,522.07
  5. Step 5: Solve for x
    x = 255,437,522.07/18,155.21
  6. Step 6: Final answer
    x = 14,069.65

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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.