Home / 30,317.76-45,515.52-20,500.56

Finding the Fourth Proportional to 30,317.76, 45,515.52 and 20,500.56

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Solution

The fourth proportional to 30,317.76, 45,515.52 and 20,500.56 is: 30,777.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,317.76 : 45,515.52 = 20,500.56 : x
  2. Step 2: Convert to fraction form
    30,317.76/45,515.52 = 20,500.56/x
  3. Step 3: Cross multiply
    30,317.76x = 45,515.52 × 20,500.56
  4. Step 4: Simplify right side
    30,317.76x = 933,093,648.69
  5. Step 5: Solve for x
    x = 933,093,648.69/30,317.76
  6. Step 6: Final answer
    x = 30,777.13

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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.