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Finding the Fourth Proportional to 13,707.50, 20,565.03 and 4,473.50

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Solution

The fourth proportional to 13,707.50, 20,565.03 and 4,473.50 is: 6,711.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.50 : 20,565.03 = 4,473.50 : x
  2. Step 2: Convert to fraction form
    13,707.50/20,565.03 = 4,473.50/x
  3. Step 3: Cross multiply
    13,707.50x = 20,565.03 × 4,473.50
  4. Step 4: Simplify right side
    13,707.50x = 91,997,661.71
  5. Step 5: Solve for x
    x = 91,997,661.71/13,707.50
  6. Step 6: Final answer
    x = 6,711.48

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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.