Home / 18,558.89-25,603.77-12,898.20

Finding the Fourth Proportional to 18,558.89, 25,603.77 and 12,898.20

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Solution

The fourth proportional to 18,558.89, 25,603.77 and 12,898.20 is: 17,794.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.89 : 25,603.77 = 12,898.20 : x
  2. Step 2: Convert to fraction form
    18,558.89/25,603.77 = 12,898.20/x
  3. Step 3: Cross multiply
    18,558.89x = 25,603.77 × 12,898.20
  4. Step 4: Simplify right side
    18,558.89x = 330,242,546.21
  5. Step 5: Solve for x
    x = 330,242,546.21/18,558.89
  6. Step 6: Final answer
    x = 17,794.30

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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.