Home / 18,779.38-28,150.87-10,451.78

Finding the Fourth Proportional to 18,779.38, 28,150.87 and 10,451.78

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Solution

The fourth proportional to 18,779.38, 28,150.87 and 10,451.78 is: 15,667.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.38 : 28,150.87 = 10,451.78 : x
  2. Step 2: Convert to fraction form
    18,779.38/28,150.87 = 10,451.78/x
  3. Step 3: Cross multiply
    18,779.38x = 28,150.87 × 10,451.78
  4. Step 4: Simplify right side
    18,779.38x = 294,226,700.05
  5. Step 5: Solve for x
    x = 294,226,700.05/18,779.38
  6. Step 6: Final answer
    x = 15,667.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.