Home / 20,433.88-28,201.36-12,474.40

Finding the Fourth Proportional to 20,433.88, 28,201.36 and 12,474.40

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Solution

The fourth proportional to 20,433.88, 28,201.36 and 12,474.40 is: 17,216.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.88 : 28,201.36 = 12,474.40 : x
  2. Step 2: Convert to fraction form
    20,433.88/28,201.36 = 12,474.40/x
  3. Step 3: Cross multiply
    20,433.88x = 28,201.36 × 12,474.40
  4. Step 4: Simplify right side
    20,433.88x = 351,795,045.18
  5. Step 5: Solve for x
    x = 351,795,045.18/20,433.88
  6. Step 6: Final answer
    x = 17,216.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.