Home / 20,977.40-28,947.96-11,546

Finding the Fourth Proportional to 20,977.40, 28,947.96 and 11,546

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Solution

The fourth proportional to 20,977.40, 28,947.96 and 11,546 is: 15,933.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.40 : 28,947.96 = 11,546 : x
  2. Step 2: Convert to fraction form
    20,977.40/28,947.96 = 11,546/x
  3. Step 3: Cross multiply
    20,977.40x = 28,947.96 × 11,546
  4. Step 4: Simplify right side
    20,977.40x = 334,233,146.16
  5. Step 5: Solve for x
    x = 334,233,146.16/20,977.40
  6. Step 6: Final answer
    x = 15,933.01

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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.