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Finding the Fourth Proportional to 13,237.98, 18,268.11 and 7,859.58

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Solution

The fourth proportional to 13,237.98, 18,268.11 and 7,859.58 is: 10,846.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,237.98 : 18,268.11 = 7,859.58 : x
  2. Step 2: Convert to fraction form
    13,237.98/18,268.11 = 7,859.58/x
  3. Step 3: Cross multiply
    13,237.98x = 18,268.11 × 7,859.58
  4. Step 4: Simplify right side
    13,237.98x = 143,579,671.99
  5. Step 5: Solve for x
    x = 143,579,671.99/13,237.98
  6. Step 6: Final answer
    x = 10,846.04

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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.