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Finding the Fourth Proportional to 12,421.56, 17,141.04 and 6,832.56

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Solution

The fourth proportional to 12,421.56, 17,141.04 and 6,832.56 is: 9,428.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.56 : 17,141.04 = 6,832.56 : x
  2. Step 2: Convert to fraction form
    12,421.56/17,141.04 = 6,832.56/x
  3. Step 3: Cross multiply
    12,421.56x = 17,141.04 × 6,832.56
  4. Step 4: Simplify right side
    12,421.56x = 117,117,184.26
  5. Step 5: Solve for x
    x = 117,117,184.26/12,421.56
  6. Step 6: Final answer
    x = 9,428.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.