Home / 28,379.00-39,161.52-16,278.87

Finding the Fourth Proportional to 28,379.00, 39,161.52 and 16,278.87

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Solution

The fourth proportional to 28,379.00, 39,161.52 and 16,278.87 is: 22,463.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.00 : 39,161.52 = 16,278.87 : x
  2. Step 2: Convert to fraction form
    28,379.00/39,161.52 = 16,278.87/x
  3. Step 3: Cross multiply
    28,379.00x = 39,161.52 × 16,278.87
  4. Step 4: Simplify right side
    28,379.00x = 637,505,354.13
  5. Step 5: Solve for x
    x = 637,505,354.13/28,379.00
  6. Step 6: Final answer
    x = 22,463.98

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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.