Home / 20,485.73-30,729.18-11,130.23

Finding the Fourth Proportional to 20,485.73, 30,729.18 and 11,130.23

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Solution

The fourth proportional to 20,485.73, 30,729.18 and 11,130.23 is: 16,695.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.73 : 30,729.18 = 11,130.23 : x
  2. Step 2: Convert to fraction form
    20,485.73/30,729.18 = 11,130.23/x
  3. Step 3: Cross multiply
    20,485.73x = 30,729.18 × 11,130.23
  4. Step 4: Simplify right side
    20,485.73x = 342,022,841.11
  5. Step 5: Solve for x
    x = 342,022,841.11/20,485.73
  6. Step 6: Final answer
    x = 16,695.66

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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.