Home / 20,283.80-30,427.48-7,136.28

Finding the Fourth Proportional to 20,283.80, 30,427.48 and 7,136.28

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Solution

The fourth proportional to 20,283.80, 30,427.48 and 7,136.28 is: 10,705.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.80 : 30,427.48 = 7,136.28 : x
  2. Step 2: Convert to fraction form
    20,283.80/30,427.48 = 7,136.28/x
  3. Step 3: Cross multiply
    20,283.80x = 30,427.48 × 7,136.28
  4. Step 4: Simplify right side
    20,283.80x = 217,139,016.97
  5. Step 5: Solve for x
    x = 217,139,016.97/20,283.80
  6. Step 6: Final answer
    x = 10,705.05

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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.