Home / 13,855.93-19,121.20-7,568.30

Finding the Fourth Proportional to 13,855.93, 19,121.20 and 7,568.30

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Solution

The fourth proportional to 13,855.93, 19,121.20 and 7,568.30 is: 10,444.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.93 : 19,121.20 = 7,568.30 : x
  2. Step 2: Convert to fraction form
    13,855.93/19,121.20 = 7,568.30/x
  3. Step 3: Cross multiply
    13,855.93x = 19,121.20 × 7,568.30
  4. Step 4: Simplify right side
    13,855.93x = 144,715,006.84
  5. Step 5: Solve for x
    x = 144,715,006.84/13,855.93
  6. Step 6: Final answer
    x = 10,444.27

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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.