Home / 30,504.42-45,697.04-21,015.07

Finding the Fourth Proportional to 30,504.42, 45,697.04 and 21,015.07

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Solution

The fourth proportional to 30,504.42, 45,697.04 and 21,015.07 is: 31,481.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,504.42 : 45,697.04 = 21,015.07 : x
  2. Step 2: Convert to fraction form
    30,504.42/45,697.04 = 21,015.07/x
  3. Step 3: Cross multiply
    30,504.42x = 45,697.04 × 21,015.07
  4. Step 4: Simplify right side
    30,504.42x = 960,326,494.39
  5. Step 5: Solve for x
    x = 960,326,494.39/30,504.42
  6. Step 6: Final answer
    x = 31,481.55

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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.