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Finding the Fourth Proportional to 13,059.72, 18,022.05 and 7,091.19

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Solution

The fourth proportional to 13,059.72, 18,022.05 and 7,091.19 is: 9,785.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,059.72 : 18,022.05 = 7,091.19 : x
  2. Step 2: Convert to fraction form
    13,059.72/18,022.05 = 7,091.19/x
  3. Step 3: Cross multiply
    13,059.72x = 18,022.05 × 7,091.19
  4. Step 4: Simplify right side
    13,059.72x = 127,797,780.74
  5. Step 5: Solve for x
    x = 127,797,780.74/13,059.72
  6. Step 6: Final answer
    x = 9,785.64

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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.