Home / 21,845.26-30,146.18-12,285.15

Finding the Fourth Proportional to 21,845.26, 30,146.18 and 12,285.15

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Solution

The fourth proportional to 21,845.26, 30,146.18 and 12,285.15 is: 16,953.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,845.26 : 30,146.18 = 12,285.15 : x
  2. Step 2: Convert to fraction form
    21,845.26/30,146.18 = 12,285.15/x
  3. Step 3: Cross multiply
    21,845.26x = 30,146.18 × 12,285.15
  4. Step 4: Simplify right side
    21,845.26x = 370,350,168.75
  5. Step 5: Solve for x
    x = 370,350,168.75/21,845.26
  6. Step 6: Final answer
    x = 16,953.34

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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.