Home / 28,541.10-39,424.37-21,908.68

Finding the Fourth Proportional to 28,541.10, 39,424.37 and 21,908.68

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Solution

The fourth proportional to 28,541.10, 39,424.37 and 21,908.68 is: 30,262.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,541.10 : 39,424.37 = 21,908.68 : x
  2. Step 2: Convert to fraction form
    28,541.10/39,424.37 = 21,908.68/x
  3. Step 3: Cross multiply
    28,541.10x = 39,424.37 × 21,908.68
  4. Step 4: Simplify right side
    28,541.10x = 863,735,906.53
  5. Step 5: Solve for x
    x = 863,735,906.53/28,541.10
  6. Step 6: Final answer
    x = 30,262.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.