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Finding the Fourth Proportional to 18,389.60, 27,591.08 and 9,028.62

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Solution

The fourth proportional to 18,389.60, 27,591.08 and 9,028.62 is: 13,546.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,389.60 : 27,591.08 = 9,028.62 : x
  2. Step 2: Convert to fraction form
    18,389.60/27,591.08 = 9,028.62/x
  3. Step 3: Cross multiply
    18,389.60x = 27,591.08 × 9,028.62
  4. Step 4: Simplify right side
    18,389.60x = 249,109,376.71
  5. Step 5: Solve for x
    x = 249,109,376.71/18,389.60
  6. Step 6: Final answer
    x = 13,546.21

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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.