Home / 39,800.90-54,923.26-21,895.45

Finding the Fourth Proportional to 39,800.90, 54,923.26 and 21,895.45

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Solution

The fourth proportional to 39,800.90, 54,923.26 and 21,895.45 is: 30,214.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,800.90 : 54,923.26 = 21,895.45 : x
  2. Step 2: Convert to fraction form
    39,800.90/54,923.26 = 21,895.45/x
  3. Step 3: Cross multiply
    39,800.90x = 54,923.26 × 21,895.45
  4. Step 4: Simplify right side
    39,800.90x = 1,202,569,493.17
  5. Step 5: Solve for x
    x = 1,202,569,493.17/39,800.90
  6. Step 6: Final answer
    x = 30,214.63

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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.