Home / 20,977.34-28,947.66-11,544.08

Finding the Fourth Proportional to 20,977.34, 28,947.66 and 11,544.08

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Solution

The fourth proportional to 20,977.34, 28,947.66 and 11,544.08 is: 15,930.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.34 : 28,947.66 = 11,544.08 : x
  2. Step 2: Convert to fraction form
    20,977.34/28,947.66 = 11,544.08/x
  3. Step 3: Cross multiply
    20,977.34x = 28,947.66 × 11,544.08
  4. Step 4: Simplify right side
    20,977.34x = 334,174,102.85
  5. Step 5: Solve for x
    x = 334,174,102.85/20,977.34
  6. Step 6: Final answer
    x = 15,930.24

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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.