Home / 20,546.37-28,366.20-13,485.15

Finding the Fourth Proportional to 20,546.37, 28,366.20 and 13,485.15

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Solution

The fourth proportional to 20,546.37, 28,366.20 and 13,485.15 is: 18,617.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,546.37 : 28,366.20 = 13,485.15 : x
  2. Step 2: Convert to fraction form
    20,546.37/28,366.20 = 13,485.15/x
  3. Step 3: Cross multiply
    20,546.37x = 28,366.20 × 13,485.15
  4. Step 4: Simplify right side
    20,546.37x = 382,522,461.93
  5. Step 5: Solve for x
    x = 382,522,461.93/20,546.37
  6. Step 6: Final answer
    x = 18,617.52

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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.