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Finding the Fourth Proportional to 12,538.55, 18,809.79 and 5,962.51

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Solution

The fourth proportional to 12,538.55, 18,809.79 and 5,962.51 is: 8,944.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.55 : 18,809.79 = 5,962.51 : x
  2. Step 2: Convert to fraction form
    12,538.55/18,809.79 = 5,962.51/x
  3. Step 3: Cross multiply
    12,538.55x = 18,809.79 × 5,962.51
  4. Step 4: Simplify right side
    12,538.55x = 112,153,612.43
  5. Step 5: Solve for x
    x = 112,153,612.43/12,538.55
  6. Step 6: Final answer
    x = 8,944.71

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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.