Home / 30,635.16-45,964.32-20,866.56

Finding the Fourth Proportional to 30,635.16, 45,964.32 and 20,866.56

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Solution

The fourth proportional to 30,635.16, 45,964.32 and 20,866.56 is: 31,307.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,635.16 : 45,964.32 = 20,866.56 : x
  2. Step 2: Convert to fraction form
    30,635.16/45,964.32 = 20,866.56/x
  3. Step 3: Cross multiply
    30,635.16x = 45,964.32 × 20,866.56
  4. Step 4: Simplify right side
    30,635.16x = 959,117,241.14
  5. Step 5: Solve for x
    x = 959,117,241.14/30,635.16
  6. Step 6: Final answer
    x = 31,307.73

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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.