Home / 30,170.30-45,181.56-21,263.72

Finding the Fourth Proportional to 30,170.30, 45,181.56 and 21,263.72

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Solution

The fourth proportional to 30,170.30, 45,181.56 and 21,263.72 is: 31,843.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,170.30 : 45,181.56 = 21,263.72 : x
  2. Step 2: Convert to fraction form
    30,170.30/45,181.56 = 21,263.72/x
  3. Step 3: Cross multiply
    30,170.30x = 45,181.56 × 21,263.72
  4. Step 4: Simplify right side
    30,170.30x = 960,728,041.00
  5. Step 5: Solve for x
    x = 960,728,041.00/30,170.30
  6. Step 6: Final answer
    x = 31,843.50

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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.