Home / 39,718.56-54,811.32-21,569.64

Finding the Fourth Proportional to 39,718.56, 54,811.32 and 21,569.64

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Solution

The fourth proportional to 39,718.56, 54,811.32 and 21,569.64 is: 29,765.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.56 : 54,811.32 = 21,569.64 : x
  2. Step 2: Convert to fraction form
    39,718.56/54,811.32 = 21,569.64/x
  3. Step 3: Cross multiply
    39,718.56x = 54,811.32 × 21,569.64
  4. Step 4: Simplify right side
    39,718.56x = 1,182,260,440.32
  5. Step 5: Solve for x
    x = 1,182,260,440.32/39,718.56
  6. Step 6: Final answer
    x = 29,765.94

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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.