Home / 13,436.89-18,537.74-8,656.47

Finding the Fourth Proportional to 13,436.89, 18,537.74 and 8,656.47

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Solution

The fourth proportional to 13,436.89, 18,537.74 and 8,656.47 is: 11,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.89 : 18,537.74 = 8,656.47 : x
  2. Step 2: Convert to fraction form
    13,436.89/18,537.74 = 8,656.47/x
  3. Step 3: Cross multiply
    13,436.89x = 18,537.74 × 8,656.47
  4. Step 4: Simplify right side
    13,436.89x = 160,471,346.90
  5. Step 5: Solve for x
    x = 160,471,346.90/13,436.89
  6. Step 6: Final answer
    x = 11,942.60

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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.