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Finding the Fourth Proportional to 20,554.50, 30,831.75 and 6,703.50

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Solution

The fourth proportional to 20,554.50, 30,831.75 and 6,703.50 is: 10,055.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.50 : 30,831.75 = 6,703.50 : x
  2. Step 2: Convert to fraction form
    20,554.50/30,831.75 = 6,703.50/x
  3. Step 3: Cross multiply
    20,554.50x = 30,831.75 × 6,703.50
  4. Step 4: Simplify right side
    20,554.50x = 206,680,636.13
  5. Step 5: Solve for x
    x = 206,680,636.13/20,554.50
  6. Step 6: Final answer
    x = 10,055.25

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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.