Home / 39,339.63-54,286.47-21,433.77

Finding the Fourth Proportional to 39,339.63, 54,286.47 and 21,433.77

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Solution

The fourth proportional to 39,339.63, 54,286.47 and 21,433.77 is: 29,577.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,339.63 : 54,286.47 = 21,433.77 : x
  2. Step 2: Convert to fraction form
    39,339.63/54,286.47 = 21,433.77/x
  3. Step 3: Cross multiply
    39,339.63x = 54,286.47 × 21,433.77
  4. Step 4: Simplify right side
    39,339.63x = 1,163,563,712.09
  5. Step 5: Solve for x
    x = 1,163,563,712.09/39,339.63
  6. Step 6: Final answer
    x = 29,577.39

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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.