Home / 30,285.99-41,812.05-20,247.66

Finding the Fourth Proportional to 30,285.99, 41,812.05 and 20,247.66

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Solution

The fourth proportional to 30,285.99, 41,812.05 and 20,247.66 is: 27,953.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,285.99 : 41,812.05 = 20,247.66 : x
  2. Step 2: Convert to fraction form
    30,285.99/41,812.05 = 20,247.66/x
  3. Step 3: Cross multiply
    30,285.99x = 41,812.05 × 20,247.66
  4. Step 4: Simplify right side
    30,285.99x = 846,596,172.30
  5. Step 5: Solve for x
    x = 846,596,172.30/30,285.99
  6. Step 6: Final answer
    x = 27,953.39

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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.