Home / 30,141.60-45,223.32-18,319.56

Finding the Fourth Proportional to 30,141.60, 45,223.32 and 18,319.56

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Solution

The fourth proportional to 30,141.60, 45,223.32 and 18,319.56 is: 27,485.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,141.60 : 45,223.32 = 18,319.56 : x
  2. Step 2: Convert to fraction form
    30,141.60/45,223.32 = 18,319.56/x
  3. Step 3: Cross multiply
    30,141.60x = 45,223.32 × 18,319.56
  4. Step 4: Simplify right side
    30,141.60x = 828,471,324.14
  5. Step 5: Solve for x
    x = 828,471,324.14/30,141.60
  6. Step 6: Final answer
    x = 27,485.98

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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.