Home / 28,202.70-38,919.06-15,455.46

Finding the Fourth Proportional to 28,202.70, 38,919.06 and 15,455.46

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Solution

The fourth proportional to 28,202.70, 38,919.06 and 15,455.46 is: 21,328.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,202.70 : 38,919.06 = 15,455.46 : x
  2. Step 2: Convert to fraction form
    28,202.70/38,919.06 = 15,455.46/x
  3. Step 3: Cross multiply
    28,202.70x = 38,919.06 × 15,455.46
  4. Step 4: Simplify right side
    28,202.70x = 601,511,975.07
  5. Step 5: Solve for x
    x = 601,511,975.07/28,202.70
  6. Step 6: Final answer
    x = 21,328.17

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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.