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Finding the Fourth Proportional to 18,609.47, 27,916.93 and 5,460.11

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Solution

The fourth proportional to 18,609.47, 27,916.93 and 5,460.11 is: 8,190.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.47 : 27,916.93 = 5,460.11 : x
  2. Step 2: Convert to fraction form
    18,609.47/27,916.93 = 5,460.11/x
  3. Step 3: Cross multiply
    18,609.47x = 27,916.93 × 5,460.11
  4. Step 4: Simplify right side
    18,609.47x = 152,429,355.43
  5. Step 5: Solve for x
    x = 152,429,355.43/18,609.47
  6. Step 6: Final answer
    x = 8,190.96

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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.