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Finding the Fourth Proportional to 18,185.61, 27,278.87 and 5,038.10

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Solution

The fourth proportional to 18,185.61, 27,278.87 and 5,038.10 is: 7,557.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,185.61 : 27,278.87 = 5,038.10 : x
  2. Step 2: Convert to fraction form
    18,185.61/27,278.87 = 5,038.10/x
  3. Step 3: Cross multiply
    18,185.61x = 27,278.87 × 5,038.10
  4. Step 4: Simplify right side
    18,185.61x = 137,433,513.36
  5. Step 5: Solve for x
    x = 137,433,513.36/18,185.61
  6. Step 6: Final answer
    x = 7,557.27

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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.