Home / 20,273.19-30,411.41-7,128.51

Finding the Fourth Proportional to 20,273.19, 30,411.41 and 7,128.51

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Solution

The fourth proportional to 20,273.19, 30,411.41 and 7,128.51 is: 10,693.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.19 : 30,411.41 = 7,128.51 : x
  2. Step 2: Convert to fraction form
    20,273.19/30,411.41 = 7,128.51/x
  3. Step 3: Cross multiply
    20,273.19x = 30,411.41 × 7,128.51
  4. Step 4: Simplify right side
    20,273.19x = 216,788,040.30
  5. Step 5: Solve for x
    x = 216,788,040.30/20,273.19
  6. Step 6: Final answer
    x = 10,693.34

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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.