Home / 20,273.09-30,411.23-7,128.41

Finding the Fourth Proportional to 20,273.09, 30,411.23 and 7,128.41

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Solution

The fourth proportional to 20,273.09, 30,411.23 and 7,128.41 is: 10,693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.09 : 30,411.23 = 7,128.41 : x
  2. Step 2: Convert to fraction form
    20,273.09/30,411.23 = 7,128.41/x
  3. Step 3: Cross multiply
    20,273.09x = 30,411.23 × 7,128.41
  4. Step 4: Simplify right side
    20,273.09x = 216,783,528.35
  5. Step 5: Solve for x
    x = 216,783,528.35/20,273.09
  6. Step 6: Final answer
    x = 10,693.17

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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.