Home / 37,905.40-52,309.44-21,991

Finding the Fourth Proportional to 37,905.40, 52,309.44 and 21,991

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Solution

The fourth proportional to 37,905.40, 52,309.44 and 21,991 is: 30,347.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,905.40 : 52,309.44 = 21,991 : x
  2. Step 2: Convert to fraction form
    37,905.40/52,309.44 = 21,991/x
  3. Step 3: Cross multiply
    37,905.40x = 52,309.44 × 21,991
  4. Step 4: Simplify right side
    37,905.40x = 1,150,336,895.04
  5. Step 5: Solve for x
    x = 1,150,336,895.04/37,905.40
  6. Step 6: Final answer
    x = 30,347.57

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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.