Home / 13,559.33-18,702.21-12,443.87

Finding the Fourth Proportional to 13,559.33, 18,702.21 and 12,443.87

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Solution

The fourth proportional to 13,559.33, 18,702.21 and 12,443.87 is: 17,163.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.33 : 18,702.21 = 12,443.87 : x
  2. Step 2: Convert to fraction form
    13,559.33/18,702.21 = 12,443.87/x
  3. Step 3: Cross multiply
    13,559.33x = 18,702.21 × 12,443.87
  4. Step 4: Simplify right side
    13,559.33x = 232,727,776.44
  5. Step 5: Solve for x
    x = 232,727,776.44/13,559.33
  6. Step 6: Final answer
    x = 17,163.67

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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.