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Finding the Fourth Proportional to 18,509.41, 25,516.42 and 13,195.00

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Solution

The fourth proportional to 18,509.41, 25,516.42 and 13,195.00 is: 18,190.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.41 : 25,516.42 = 13,195.00 : x
  2. Step 2: Convert to fraction form
    18,509.41/25,516.42 = 13,195.00/x
  3. Step 3: Cross multiply
    18,509.41x = 25,516.42 × 13,195.00
  4. Step 4: Simplify right side
    18,509.41x = 336,689,160.81
  5. Step 5: Solve for x
    x = 336,689,160.81/18,509.41
  6. Step 6: Final answer
    x = 18,190.16

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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.