Home / 12,631.81-18,939.62-5,613.97

Finding the Fourth Proportional to 12,631.81, 18,939.62 and 5,613.97

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Solution

The fourth proportional to 12,631.81, 18,939.62 and 5,613.97 is: 8,417.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.81 : 18,939.62 = 5,613.97 : x
  2. Step 2: Convert to fraction form
    12,631.81/18,939.62 = 5,613.97/x
  3. Step 3: Cross multiply
    12,631.81x = 18,939.62 × 5,613.97
  4. Step 4: Simplify right side
    12,631.81x = 106,326,430.42
  5. Step 5: Solve for x
    x = 106,326,430.42/12,631.81
  6. Step 6: Final answer
    x = 8,417.36

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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.