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Finding the Fourth Proportional to 14,954.79, 20,636.54 and 8,240.03

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Solution

The fourth proportional to 14,954.79, 20,636.54 and 8,240.03 is: 11,370.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,954.79 : 20,636.54 = 8,240.03 : x
  2. Step 2: Convert to fraction form
    14,954.79/20,636.54 = 8,240.03/x
  3. Step 3: Cross multiply
    14,954.79x = 20,636.54 × 8,240.03
  4. Step 4: Simplify right side
    14,954.79x = 170,045,672.60
  5. Step 5: Solve for x
    x = 170,045,672.60/14,954.79
  6. Step 6: Final answer
    x = 11,370.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.