Home / 18,115.53-24,990.93-12,813.27

Finding the Fourth Proportional to 18,115.53, 24,990.93 and 12,813.27

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Solution

The fourth proportional to 18,115.53, 24,990.93 and 12,813.27 is: 17,676.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.53 : 24,990.93 = 12,813.27 : x
  2. Step 2: Convert to fraction form
    18,115.53/24,990.93 = 12,813.27/x
  3. Step 3: Cross multiply
    18,115.53x = 24,990.93 × 12,813.27
  4. Step 4: Simplify right side
    18,115.53x = 320,215,533.64
  5. Step 5: Solve for x
    x = 320,215,533.64/18,115.53
  6. Step 6: Final answer
    x = 17,676.30

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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.