Home / 13,680.48-20,508.72-4,794.38

Finding the Fourth Proportional to 13,680.48, 20,508.72 and 4,794.38

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Solution

The fourth proportional to 13,680.48, 20,508.72 and 4,794.38 is: 7,187.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.48 : 20,508.72 = 4,794.38 : x
  2. Step 2: Convert to fraction form
    13,680.48/20,508.72 = 4,794.38/x
  3. Step 3: Cross multiply
    13,680.48x = 20,508.72 × 4,794.38
  4. Step 4: Simplify right side
    13,680.48x = 98,326,494.45
  5. Step 5: Solve for x
    x = 98,326,494.45/13,680.48
  6. Step 6: Final answer
    x = 7,187.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.