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Finding the Fourth Proportional to 13,871.52, 20,802.06 and 4,509.14

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Solution

The fourth proportional to 13,871.52, 20,802.06 and 4,509.14 is: 6,762.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.52 : 20,802.06 = 4,509.14 : x
  2. Step 2: Convert to fraction form
    13,871.52/20,802.06 = 4,509.14/x
  3. Step 3: Cross multiply
    13,871.52x = 20,802.06 × 4,509.14
  4. Step 4: Simplify right side
    13,871.52x = 93,799,296.82
  5. Step 5: Solve for x
    x = 93,799,296.82/13,871.52
  6. Step 6: Final answer
    x = 6,762.01

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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.