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Finding the Fourth Proportional to 13,653, 20,483.10 and 4,419.72

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Solution

The fourth proportional to 13,653, 20,483.10 and 4,419.72 is: 6,630.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653 : 20,483.10 = 4,419.72 : x
  2. Step 2: Convert to fraction form
    13,653/20,483.10 = 4,419.72/x
  3. Step 3: Cross multiply
    13,653x = 20,483.10 × 4,419.72
  4. Step 4: Simplify right side
    13,653x = 90,529,566.73
  5. Step 5: Solve for x
    x = 90,529,566.73/13,653
  6. Step 6: Final answer
    x = 6,630.75

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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.