Home / 18,558.58-25,588.29-12,898.12

Finding the Fourth Proportional to 18,558.58, 25,588.29 and 12,898.12

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Solution

The fourth proportional to 18,558.58, 25,588.29 and 12,898.12 is: 17,783.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.58 : 25,588.29 = 12,898.12 : x
  2. Step 2: Convert to fraction form
    18,558.58/25,588.29 = 12,898.12/x
  3. Step 3: Cross multiply
    18,558.58x = 25,588.29 × 12,898.12
  4. Step 4: Simplify right side
    18,558.58x = 330,040,835.01
  5. Step 5: Solve for x
    x = 330,040,835.01/18,558.58
  6. Step 6: Final answer
    x = 17,783.73

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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.