Home / 39,795.28-54,916.31-21,890.27

Finding the Fourth Proportional to 39,795.28, 54,916.31 and 21,890.27

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Solution

The fourth proportional to 39,795.28, 54,916.31 and 21,890.27 is: 30,207.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,795.28 : 54,916.31 = 21,890.27 : x
  2. Step 2: Convert to fraction form
    39,795.28/54,916.31 = 21,890.27/x
  3. Step 3: Cross multiply
    39,795.28x = 54,916.31 × 21,890.27
  4. Step 4: Simplify right side
    39,795.28x = 1,202,133,045.32
  5. Step 5: Solve for x
    x = 1,202,133,045.32/39,795.28
  6. Step 6: Final answer
    x = 30,207.93

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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.