Home / 28,890.45-39,866.88-16,314.39

Finding the Fourth Proportional to 28,890.45, 39,866.88 and 16,314.39

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Solution

The fourth proportional to 28,890.45, 39,866.88 and 16,314.39 is: 22,512.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.45 : 39,866.88 = 16,314.39 : x
  2. Step 2: Convert to fraction form
    28,890.45/39,866.88 = 16,314.39/x
  3. Step 3: Cross multiply
    28,890.45x = 39,866.88 × 16,314.39
  4. Step 4: Simplify right side
    28,890.45x = 650,403,828.40
  5. Step 5: Solve for x
    x = 650,403,828.40/28,890.45
  6. Step 6: Final answer
    x = 22,512.76

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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.