Home / 13,239.55-19,840.19-7,383.86

Finding the Fourth Proportional to 13,239.55, 19,840.19 and 7,383.86

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Solution

The fourth proportional to 13,239.55, 19,840.19 and 7,383.86 is: 11,065.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.55 : 19,840.19 = 7,383.86 : x
  2. Step 2: Convert to fraction form
    13,239.55/19,840.19 = 7,383.86/x
  3. Step 3: Cross multiply
    13,239.55x = 19,840.19 × 7,383.86
  4. Step 4: Simplify right side
    13,239.55x = 146,497,165.15
  5. Step 5: Solve for x
    x = 146,497,165.15/13,239.55
  6. Step 6: Final answer
    x = 11,065.12

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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.