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Finding the Fourth Proportional to 13,695.74, 20,504.16 and 12,271.04

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Solution

The fourth proportional to 13,695.74, 20,504.16 and 12,271.04 is: 18,371.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.74 : 20,504.16 = 12,271.04 : x
  2. Step 2: Convert to fraction form
    13,695.74/20,504.16 = 12,271.04/x
  3. Step 3: Cross multiply
    13,695.74x = 20,504.16 × 12,271.04
  4. Step 4: Simplify right side
    13,695.74x = 251,607,367.53
  5. Step 5: Solve for x
    x = 251,607,367.53/13,695.74
  6. Step 6: Final answer
    x = 18,371.21

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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.