Home / 30,019.55-45,028.51-10,311.71

Finding the Fourth Proportional to 30,019.55, 45,028.51 and 10,311.71

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Solution

The fourth proportional to 30,019.55, 45,028.51 and 10,311.71 is: 15,467.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,019.55 : 45,028.51 = 10,311.71 : x
  2. Step 2: Convert to fraction form
    30,019.55/45,028.51 = 10,311.71/x
  3. Step 3: Cross multiply
    30,019.55x = 45,028.51 × 10,311.71
  4. Step 4: Simplify right side
    30,019.55x = 464,320,685.93
  5. Step 5: Solve for x
    x = 464,320,685.93/30,019.55
  6. Step 6: Final answer
    x = 15,467.28

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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.