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Finding the Fourth Proportional to 18,607.59, 27,911.61 and 5,460.21

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Solution

The fourth proportional to 18,607.59, 27,911.61 and 5,460.21 is: 8,190.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.59 : 27,911.61 = 5,460.21 : x
  2. Step 2: Convert to fraction form
    18,607.59/27,911.61 = 5,460.21/x
  3. Step 3: Cross multiply
    18,607.59x = 27,911.61 × 5,460.21
  4. Step 4: Simplify right side
    18,607.59x = 152,403,252.04
  5. Step 5: Solve for x
    x = 152,403,252.04/18,607.59
  6. Step 6: Final answer
    x = 8,190.38

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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.