Home / 31,262.88-43,156.80-19,947.60

Finding the Fourth Proportional to 31,262.88, 43,156.80 and 19,947.60

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Solution

The fourth proportional to 31,262.88, 43,156.80 and 19,947.60 is: 27,536.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,262.88 : 43,156.80 = 19,947.60 : x
  2. Step 2: Convert to fraction form
    31,262.88/43,156.80 = 19,947.60/x
  3. Step 3: Cross multiply
    31,262.88x = 43,156.80 × 19,947.60
  4. Step 4: Simplify right side
    31,262.88x = 860,874,583.68
  5. Step 5: Solve for x
    x = 860,874,583.68/31,262.88
  6. Step 6: Final answer
    x = 27,536.64

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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.