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Finding the Fourth Proportional to 18,530.56, 27,779.10 and 6,840.91

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Solution

The fourth proportional to 18,530.56, 27,779.10 and 6,840.91 is: 10,255.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,530.56 : 27,779.10 = 6,840.91 : x
  2. Step 2: Convert to fraction form
    18,530.56/27,779.10 = 6,840.91/x
  3. Step 3: Cross multiply
    18,530.56x = 27,779.10 × 6,840.91
  4. Step 4: Simplify right side
    18,530.56x = 190,034,322.98
  5. Step 5: Solve for x
    x = 190,034,322.98/18,530.56
  6. Step 6: Final answer
    x = 10,255.19

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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.