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Finding the Fourth Proportional to 39,571.48, 54,608.63 and 21,666.48

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Solution

The fourth proportional to 39,571.48, 54,608.63 and 21,666.48 is: 29,899.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,571.48 : 54,608.63 = 21,666.48 : x
  2. Step 2: Convert to fraction form
    39,571.48/54,608.63 = 21,666.48/x
  3. Step 3: Cross multiply
    39,571.48x = 54,608.63 × 21,666.48
  4. Step 4: Simplify right side
    39,571.48x = 1,183,176,752.07
  5. Step 5: Solve for x
    x = 1,183,176,752.07/39,571.48
  6. Step 6: Final answer
    x = 29,899.74

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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.