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Finding the Fourth Proportional to 13,493.42, 20,240.04 and 4,259.42

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Solution

The fourth proportional to 13,493.42, 20,240.04 and 4,259.42 is: 6,389.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,493.42 : 20,240.04 = 4,259.42 : x
  2. Step 2: Convert to fraction form
    13,493.42/20,240.04 = 4,259.42/x
  3. Step 3: Cross multiply
    13,493.42x = 20,240.04 × 4,259.42
  4. Step 4: Simplify right side
    13,493.42x = 86,210,831.18
  5. Step 5: Solve for x
    x = 86,210,831.18/13,493.42
  6. Step 6: Final answer
    x = 6,389.10

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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.