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Finding the Fourth Proportional to 13,604.70, 18,774.21 and 7,554.63

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Solution

The fourth proportional to 13,604.70, 18,774.21 and 7,554.63 is: 10,425.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.70 : 18,774.21 = 7,554.63 : x
  2. Step 2: Convert to fraction form
    13,604.70/18,774.21 = 7,554.63/x
  3. Step 3: Cross multiply
    13,604.70x = 18,774.21 × 7,554.63
  4. Step 4: Simplify right side
    13,604.70x = 141,832,150.42
  5. Step 5: Solve for x
    x = 141,832,150.42/13,604.70
  6. Step 6: Final answer
    x = 10,425.23

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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.