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Finding the Fourth Proportional to 12,637.56, 18,956.78 and 4,739.27

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Solution

The fourth proportional to 12,637.56, 18,956.78 and 4,739.27 is: 7,109.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,637.56 : 18,956.78 = 4,739.27 : x
  2. Step 2: Convert to fraction form
    12,637.56/18,956.78 = 4,739.27/x
  3. Step 3: Cross multiply
    12,637.56x = 18,956.78 × 4,739.27
  4. Step 4: Simplify right side
    12,637.56x = 89,841,298.75
  5. Step 5: Solve for x
    x = 89,841,298.75/12,637.56
  6. Step 6: Final answer
    x = 7,109.07

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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.