Home / 12,558.36-17,336.94-9,719.40

Finding the Fourth Proportional to 12,558.36, 17,336.94 and 9,719.40

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Solution

The fourth proportional to 12,558.36, 17,336.94 and 9,719.40 is: 13,417.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.36 : 17,336.94 = 9,719.40 : x
  2. Step 2: Convert to fraction form
    12,558.36/17,336.94 = 9,719.40/x
  3. Step 3: Cross multiply
    12,558.36x = 17,336.94 × 9,719.40
  4. Step 4: Simplify right side
    12,558.36x = 168,504,654.64
  5. Step 5: Solve for x
    x = 168,504,654.64/12,558.36
  6. Step 6: Final answer
    x = 13,417.73

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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.