Home / 20,779.04-28,671.72-11,826.69

Finding the Fourth Proportional to 20,779.04, 28,671.72 and 11,826.69

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Solution

The fourth proportional to 20,779.04, 28,671.72 and 11,826.69 is: 16,318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.04 : 28,671.72 = 11,826.69 : x
  2. Step 2: Convert to fraction form
    20,779.04/28,671.72 = 11,826.69/x
  3. Step 3: Cross multiply
    20,779.04x = 28,671.72 × 11,826.69
  4. Step 4: Simplify right side
    20,779.04x = 339,091,544.21
  5. Step 5: Solve for x
    x = 339,091,544.21/20,779.04
  6. Step 6: Final answer
    x = 16,318.93

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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.