Home / 13,785.98-19,015.67-8,115.95

Finding the Fourth Proportional to 13,785.98, 19,015.67 and 8,115.95

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Solution

The fourth proportional to 13,785.98, 19,015.67 and 8,115.95 is: 11,194.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.98 : 19,015.67 = 8,115.95 : x
  2. Step 2: Convert to fraction form
    13,785.98/19,015.67 = 8,115.95/x
  3. Step 3: Cross multiply
    13,785.98x = 19,015.67 × 8,115.95
  4. Step 4: Simplify right side
    13,785.98x = 154,330,294.77
  5. Step 5: Solve for x
    x = 154,330,294.77/13,785.98
  6. Step 6: Final answer
    x = 11,194.73

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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.