Home / 12,558.13-18,837.19-9,786.87

Finding the Fourth Proportional to 12,558.13, 18,837.19 and 9,786.87

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Solution

The fourth proportional to 12,558.13, 18,837.19 and 9,786.87 is: 14,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.13 : 18,837.19 = 9,786.87 : x
  2. Step 2: Convert to fraction form
    12,558.13/18,837.19 = 9,786.87/x
  3. Step 3: Cross multiply
    12,558.13x = 18,837.19 × 9,786.87
  4. Step 4: Simplify right side
    12,558.13x = 184,357,129.70
  5. Step 5: Solve for x
    x = 184,357,129.70/12,558.13
  6. Step 6: Final answer
    x = 14,680.30

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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.