Home / 13,687.52-18,900.29-9,226.04

Finding the Fourth Proportional to 13,687.52, 18,900.29 and 9,226.04

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Solution

The fourth proportional to 13,687.52, 18,900.29 and 9,226.04 is: 12,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.52 : 18,900.29 = 9,226.04 : x
  2. Step 2: Convert to fraction form
    13,687.52/18,900.29 = 9,226.04/x
  3. Step 3: Cross multiply
    13,687.52x = 18,900.29 × 9,226.04
  4. Step 4: Simplify right side
    13,687.52x = 174,374,901.87
  5. Step 5: Solve for x
    x = 174,374,901.87/13,687.52
  6. Step 6: Final answer
    x = 12,739.70

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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.