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Finding the Fourth Proportional to 12,502.99, 18,754.50 and 5,107.45

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Solution

The fourth proportional to 12,502.99, 18,754.50 and 5,107.45 is: 7,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,502.99 : 18,754.50 = 5,107.45 : x
  2. Step 2: Convert to fraction form
    12,502.99/18,754.50 = 5,107.45/x
  3. Step 3: Cross multiply
    12,502.99x = 18,754.50 × 5,107.45
  4. Step 4: Simplify right side
    12,502.99x = 95,787,683.79
  5. Step 5: Solve for x
    x = 95,787,683.79/12,502.99
  6. Step 6: Final answer
    x = 7,661.19

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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.