Home / 28,813.71-39,761.88-16,876.80

Finding the Fourth Proportional to 28,813.71, 39,761.88 and 16,876.80

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Solution

The fourth proportional to 28,813.71, 39,761.88 and 16,876.80 is: 23,289.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,813.71 : 39,761.88 = 16,876.80 : x
  2. Step 2: Convert to fraction form
    28,813.71/39,761.88 = 16,876.80/x
  3. Step 3: Cross multiply
    28,813.71x = 39,761.88 × 16,876.80
  4. Step 4: Simplify right side
    28,813.71x = 671,053,296.38
  5. Step 5: Solve for x
    x = 671,053,296.38/28,813.71
  6. Step 6: Final answer
    x = 23,289.37

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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.