Home / 30,302.02-41,829.69-20,371.78

Finding the Fourth Proportional to 30,302.02, 41,829.69 and 20,371.78

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Solution

The fourth proportional to 30,302.02, 41,829.69 and 20,371.78 is: 28,121.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,302.02 : 41,829.69 = 20,371.78 : x
  2. Step 2: Convert to fraction form
    30,302.02/41,829.69 = 20,371.78/x
  3. Step 3: Cross multiply
    30,302.02x = 41,829.69 × 20,371.78
  4. Step 4: Simplify right side
    30,302.02x = 852,145,242.15
  5. Step 5: Solve for x
    x = 852,145,242.15/30,302.02
  6. Step 6: Final answer
    x = 28,121.73

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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.