Home / 20,840.08-31,270.34-9,745.13

Finding the Fourth Proportional to 20,840.08, 31,270.34 and 9,745.13

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Solution

The fourth proportional to 20,840.08, 31,270.34 and 9,745.13 is: 14,622.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.08 : 31,270.34 = 9,745.13 : x
  2. Step 2: Convert to fraction form
    20,840.08/31,270.34 = 9,745.13/x
  3. Step 3: Cross multiply
    20,840.08x = 31,270.34 × 9,745.13
  4. Step 4: Simplify right side
    20,840.08x = 304,733,528.44
  5. Step 5: Solve for x
    x = 304,733,528.44/20,840.08
  6. Step 6: Final answer
    x = 14,622.47

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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.