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Finding the Fourth Proportional to 12,539.54, 18,809.57 and 3,655.54

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Solution

The fourth proportional to 12,539.54, 18,809.57 and 3,655.54 is: 5,483.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.54 : 18,809.57 = 3,655.54 : x
  2. Step 2: Convert to fraction form
    12,539.54/18,809.57 = 3,655.54/x
  3. Step 3: Cross multiply
    12,539.54x = 18,809.57 × 3,655.54
  4. Step 4: Simplify right side
    12,539.54x = 68,759,055.03
  5. Step 5: Solve for x
    x = 68,759,055.03/12,539.54
  6. Step 6: Final answer
    x = 5,483.38

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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.