Home / 20,736.04-31,095.20-7,904.80

Finding the Fourth Proportional to 20,736.04, 31,095.20 and 7,904.80

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Solution

The fourth proportional to 20,736.04, 31,095.20 and 7,904.80 is: 11,853.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.04 : 31,095.20 = 7,904.80 : x
  2. Step 2: Convert to fraction form
    20,736.04/31,095.20 = 7,904.80/x
  3. Step 3: Cross multiply
    20,736.04x = 31,095.20 × 7,904.80
  4. Step 4: Simplify right side
    20,736.04x = 245,801,336.96
  5. Step 5: Solve for x
    x = 245,801,336.96/20,736.04
  6. Step 6: Final answer
    x = 11,853.82

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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.