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Finding the Fourth Proportional to 12,652.93, 18,972.91 and 7,104.79

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Solution

The fourth proportional to 12,652.93, 18,972.91 and 7,104.79 is: 10,653.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,652.93 : 18,972.91 = 7,104.79 : x
  2. Step 2: Convert to fraction form
    12,652.93/18,972.91 = 7,104.79/x
  3. Step 3: Cross multiply
    12,652.93x = 18,972.91 × 7,104.79
  4. Step 4: Simplify right side
    12,652.93x = 134,798,500.49
  5. Step 5: Solve for x
    x = 134,798,500.49/12,652.93
  6. Step 6: Final answer
    x = 10,653.54

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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.