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Finding the Fourth Proportional to 39,367.94, 54,328.07 and 21,463.07

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Solution

The fourth proportional to 39,367.94, 54,328.07 and 21,463.07 is: 29,619.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,367.94 : 54,328.07 = 21,463.07 : x
  2. Step 2: Convert to fraction form
    39,367.94/54,328.07 = 21,463.07/x
  3. Step 3: Cross multiply
    39,367.94x = 54,328.07 × 21,463.07
  4. Step 4: Simplify right side
    39,367.94x = 1,166,047,165.97
  5. Step 5: Solve for x
    x = 1,166,047,165.97/39,367.94
  6. Step 6: Final answer
    x = 29,619.21

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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.