Home / 30,382.68-45,575.64-28,720.56

Finding the Fourth Proportional to 30,382.68, 45,575.64 and 28,720.56

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Solution

The fourth proportional to 30,382.68, 45,575.64 and 28,720.56 is: 43,082.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,382.68 : 45,575.64 = 28,720.56 : x
  2. Step 2: Convert to fraction form
    30,382.68/45,575.64 = 28,720.56/x
  3. Step 3: Cross multiply
    30,382.68x = 45,575.64 × 28,720.56
  4. Step 4: Simplify right side
    30,382.68x = 1,308,957,903.16
  5. Step 5: Solve for x
    x = 1,308,957,903.16/30,382.68
  6. Step 6: Final answer
    x = 43,082.37

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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.