Home / 13,239.96-18,263.12-7,858.85

Finding the Fourth Proportional to 13,239.96, 18,263.12 and 7,858.85

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Solution

The fourth proportional to 13,239.96, 18,263.12 and 7,858.85 is: 10,840.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.96 : 18,263.12 = 7,858.85 : x
  2. Step 2: Convert to fraction form
    13,239.96/18,263.12 = 7,858.85/x
  3. Step 3: Cross multiply
    13,239.96x = 18,263.12 × 7,858.85
  4. Step 4: Simplify right side
    13,239.96x = 143,527,029.30
  5. Step 5: Solve for x
    x = 143,527,029.30/13,239.96
  6. Step 6: Final answer
    x = 10,840.44

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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.