Home / 13,702.21-18,909.03-7,414.57

Finding the Fourth Proportional to 13,702.21, 18,909.03 and 7,414.57

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Solution

The fourth proportional to 13,702.21, 18,909.03 and 7,414.57 is: 10,232.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,702.21 : 18,909.03 = 7,414.57 : x
  2. Step 2: Convert to fraction form
    13,702.21/18,909.03 = 7,414.57/x
  3. Step 3: Cross multiply
    13,702.21x = 18,909.03 × 7,414.57
  4. Step 4: Simplify right side
    13,702.21x = 140,202,326.57
  5. Step 5: Solve for x
    x = 140,202,326.57/13,702.21
  6. Step 6: Final answer
    x = 10,232.10

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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.