Home / 38,135.64-52,629.24-21,139.50

Finding the Fourth Proportional to 38,135.64, 52,629.24 and 21,139.50

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Solution

The fourth proportional to 38,135.64, 52,629.24 and 21,139.50 is: 29,173.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,135.64 : 52,629.24 = 21,139.50 : x
  2. Step 2: Convert to fraction form
    38,135.64/52,629.24 = 21,139.50/x
  3. Step 3: Cross multiply
    38,135.64x = 52,629.24 × 21,139.50
  4. Step 4: Simplify right side
    38,135.64x = 1,112,555,818.98
  5. Step 5: Solve for x
    x = 1,112,555,818.98/38,135.64
  6. Step 6: Final answer
    x = 29,173.65

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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.