Home / 19,980.24-30,004.38-19,144.32

Finding the Fourth Proportional to 19,980.24, 30,004.38 and 19,144.32

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Solution

The fourth proportional to 19,980.24, 30,004.38 and 19,144.32 is: 28,749.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.24 : 30,004.38 = 19,144.32 : x
  2. Step 2: Convert to fraction form
    19,980.24/30,004.38 = 19,144.32/x
  3. Step 3: Cross multiply
    19,980.24x = 30,004.38 × 19,144.32
  4. Step 4: Simplify right side
    19,980.24x = 574,413,452.12
  5. Step 5: Solve for x
    x = 574,413,452.12/19,980.24
  6. Step 6: Final answer
    x = 28,749.08

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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.