Home / 30,307.15-41,790.41-20,748.59

Finding the Fourth Proportional to 30,307.15, 41,790.41 and 20,748.59

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Solution

The fourth proportional to 30,307.15, 41,790.41 and 20,748.59 is: 28,610.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,307.15 : 41,790.41 = 20,748.59 : x
  2. Step 2: Convert to fraction form
    30,307.15/41,790.41 = 20,748.59/x
  3. Step 3: Cross multiply
    30,307.15x = 41,790.41 × 20,748.59
  4. Step 4: Simplify right side
    30,307.15x = 867,092,121.56
  5. Step 5: Solve for x
    x = 867,092,121.56/30,307.15
  6. Step 6: Final answer
    x = 28,610.15

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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.