Home / 28,811.49-39,763.47-16,879.38

Finding the Fourth Proportional to 28,811.49, 39,763.47 and 16,879.38

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Solution

The fourth proportional to 28,811.49, 39,763.47 and 16,879.38 is: 23,295.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.49 : 39,763.47 = 16,879.38 : x
  2. Step 2: Convert to fraction form
    28,811.49/39,763.47 = 16,879.38/x
  3. Step 3: Cross multiply
    28,811.49x = 39,763.47 × 16,879.38
  4. Step 4: Simplify right side
    28,811.49x = 671,182,720.25
  5. Step 5: Solve for x
    x = 671,182,720.25/28,811.49
  6. Step 6: Final answer
    x = 23,295.66

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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.