Home / 20,994.51-31,485.28-6,951.64

Finding the Fourth Proportional to 20,994.51, 31,485.28 and 6,951.64

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Solution

The fourth proportional to 20,994.51, 31,485.28 and 6,951.64 is: 10,425.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.51 : 31,485.28 = 6,951.64 : x
  2. Step 2: Convert to fraction form
    20,994.51/31,485.28 = 6,951.64/x
  3. Step 3: Cross multiply
    20,994.51x = 31,485.28 × 6,951.64
  4. Step 4: Simplify right side
    20,994.51x = 218,874,331.86
  5. Step 5: Solve for x
    x = 218,874,331.86/20,994.51
  6. Step 6: Final answer
    x = 10,425.31

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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.