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Finding the Fourth Proportional to 13,302.70, 19,954.04 and 4,986.63

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Solution

The fourth proportional to 13,302.70, 19,954.04 and 4,986.63 is: 7,479.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,302.70 : 19,954.04 = 4,986.63 : x
  2. Step 2: Convert to fraction form
    13,302.70/19,954.04 = 4,986.63/x
  3. Step 3: Cross multiply
    13,302.70x = 19,954.04 × 4,986.63
  4. Step 4: Simplify right side
    13,302.70x = 99,503,414.49
  5. Step 5: Solve for x
    x = 99,503,414.49/13,302.70
  6. Step 6: Final answer
    x = 7,479.94

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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.