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Finding the Fourth Proportional to 13,574.79, 18,732.87 and 7,606.85

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Solution

The fourth proportional to 13,574.79, 18,732.87 and 7,606.85 is: 10,497.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,574.79 : 18,732.87 = 7,606.85 : x
  2. Step 2: Convert to fraction form
    13,574.79/18,732.87 = 7,606.85/x
  3. Step 3: Cross multiply
    13,574.79x = 18,732.87 × 7,606.85
  4. Step 4: Simplify right side
    13,574.79x = 142,498,038.50
  5. Step 5: Solve for x
    x = 142,498,038.50/13,574.79
  6. Step 6: Final answer
    x = 10,497.26

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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.