Home / 12,855.05-19,300.42-6,619.52

Finding the Fourth Proportional to 12,855.05, 19,300.42 and 6,619.52

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Solution

The fourth proportional to 12,855.05, 19,300.42 and 6,619.52 is: 9,938.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.05 : 19,300.42 = 6,619.52 : x
  2. Step 2: Convert to fraction form
    12,855.05/19,300.42 = 6,619.52/x
  3. Step 3: Cross multiply
    12,855.05x = 19,300.42 × 6,619.52
  4. Step 4: Simplify right side
    12,855.05x = 127,759,419.70
  5. Step 5: Solve for x
    x = 127,759,419.70/12,855.05
  6. Step 6: Final answer
    x = 9,938.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.