Home / 13,631.79-18,794.52-9,148.44

Finding the Fourth Proportional to 13,631.79, 18,794.52 and 9,148.44

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Solution

The fourth proportional to 13,631.79, 18,794.52 and 9,148.44 is: 12,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.79 : 18,794.52 = 9,148.44 : x
  2. Step 2: Convert to fraction form
    13,631.79/18,794.52 = 9,148.44/x
  3. Step 3: Cross multiply
    13,631.79x = 18,794.52 × 9,148.44
  4. Step 4: Simplify right side
    13,631.79x = 171,940,538.55
  5. Step 5: Solve for x
    x = 171,940,538.55/13,631.79
  6. Step 6: Final answer
    x = 12,613.20

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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.