Home / 30,027.24-41,399.10-20,579.40

Finding the Fourth Proportional to 30,027.24, 41,399.10 and 20,579.40

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Solution

The fourth proportional to 30,027.24, 41,399.10 and 20,579.40 is: 28,373.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,027.24 : 41,399.10 = 20,579.40 : x
  2. Step 2: Convert to fraction form
    30,027.24/41,399.10 = 20,579.40/x
  3. Step 3: Cross multiply
    30,027.24x = 41,399.10 × 20,579.40
  4. Step 4: Simplify right side
    30,027.24x = 851,968,638.54
  5. Step 5: Solve for x
    x = 851,968,638.54/30,027.24
  6. Step 6: Final answer
    x = 28,373.19

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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.