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Finding the Fourth Proportional to 12,574.79, 18,813.41 and 9,072.86

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Solution

The fourth proportional to 12,574.79, 18,813.41 and 9,072.86 is: 13,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,574.79 : 18,813.41 = 9,072.86 : x
  2. Step 2: Convert to fraction form
    12,574.79/18,813.41 = 9,072.86/x
  3. Step 3: Cross multiply
    12,574.79x = 18,813.41 × 9,072.86
  4. Step 4: Simplify right side
    12,574.79x = 170,691,389.69
  5. Step 5: Solve for x
    x = 170,691,389.69/12,574.79
  6. Step 6: Final answer
    x = 13,574.10

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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.