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Finding the Fourth Proportional to 18,280.09, 27,420.18 and 4,429.09

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Solution

The fourth proportional to 18,280.09, 27,420.18 and 4,429.09 is: 6,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,280.09 : 27,420.18 = 4,429.09 : x
  2. Step 2: Convert to fraction form
    18,280.09/27,420.18 = 4,429.09/x
  3. Step 3: Cross multiply
    18,280.09x = 27,420.18 × 4,429.09
  4. Step 4: Simplify right side
    18,280.09x = 121,446,445.04
  5. Step 5: Solve for x
    x = 121,446,445.04/18,280.09
  6. Step 6: Final answer
    x = 6,643.65

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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.