Home / 13,555.14-18,702.54-8,454.72

Finding the Fourth Proportional to 13,555.14, 18,702.54 and 8,454.72

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Solution

The fourth proportional to 13,555.14, 18,702.54 and 8,454.72 is: 11,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.14 : 18,702.54 = 8,454.72 : x
  2. Step 2: Convert to fraction form
    13,555.14/18,702.54 = 8,454.72/x
  3. Step 3: Cross multiply
    13,555.14x = 18,702.54 × 8,454.72
  4. Step 4: Simplify right side
    13,555.14x = 158,124,738.99
  5. Step 5: Solve for x
    x = 158,124,738.99/13,555.14
  6. Step 6: Final answer
    x = 11,665.30

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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.