Home / 13,678.08-18,874.56-8,013.60

Finding the Fourth Proportional to 13,678.08, 18,874.56 and 8,013.60

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Solution

The fourth proportional to 13,678.08, 18,874.56 and 8,013.60 is: 11,058.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.08 : 18,874.56 = 8,013.60 : x
  2. Step 2: Convert to fraction form
    13,678.08/18,874.56 = 8,013.60/x
  3. Step 3: Cross multiply
    13,678.08x = 18,874.56 × 8,013.60
  4. Step 4: Simplify right side
    13,678.08x = 151,253,174.02
  5. Step 5: Solve for x
    x = 151,253,174.02/13,678.08
  6. Step 6: Final answer
    x = 11,058.07

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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.