Home / 20,283.24-30,428.70-6,429.48

Finding the Fourth Proportional to 20,283.24, 30,428.70 and 6,429.48

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Solution

The fourth proportional to 20,283.24, 30,428.70 and 6,429.48 is: 9,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.24 : 30,428.70 = 6,429.48 : x
  2. Step 2: Convert to fraction form
    20,283.24/30,428.70 = 6,429.48/x
  3. Step 3: Cross multiply
    20,283.24x = 30,428.70 × 6,429.48
  4. Step 4: Simplify right side
    20,283.24x = 195,640,718.08
  5. Step 5: Solve for x
    x = 195,640,718.08/20,283.24
  6. Step 6: Final answer
    x = 9,645.44

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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.