Home / 13,670.11-18,863.52-7,702.75

Finding the Fourth Proportional to 13,670.11, 18,863.52 and 7,702.75

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Solution

The fourth proportional to 13,670.11, 18,863.52 and 7,702.75 is: 10,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.11 : 18,863.52 = 7,702.75 : x
  2. Step 2: Convert to fraction form
    13,670.11/18,863.52 = 7,702.75/x
  3. Step 3: Cross multiply
    13,670.11x = 18,863.52 × 7,702.75
  4. Step 4: Simplify right side
    13,670.11x = 145,300,978.68
  5. Step 5: Solve for x
    x = 145,300,978.68/13,670.11
  6. Step 6: Final answer
    x = 10,629.10

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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.