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Finding the Fourth Proportional to 14,614.56, 20,169.81 and 14,155.29

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Solution

The fourth proportional to 14,614.56, 20,169.81 and 14,155.29 is: 19,535.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,614.56 : 20,169.81 = 14,155.29 : x
  2. Step 2: Convert to fraction form
    14,614.56/20,169.81 = 14,155.29/x
  3. Step 3: Cross multiply
    14,614.56x = 20,169.81 × 14,155.29
  4. Step 4: Simplify right side
    14,614.56x = 285,509,509.79
  5. Step 5: Solve for x
    x = 285,509,509.79/14,614.56
  6. Step 6: Final answer
    x = 19,535.96

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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.