Home / 28,891.54-39,868.50-16,143.76

Finding the Fourth Proportional to 28,891.54, 39,868.50 and 16,143.76

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Solution

The fourth proportional to 28,891.54, 39,868.50 and 16,143.76 is: 22,277.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,891.54 : 39,868.50 = 16,143.76 : x
  2. Step 2: Convert to fraction form
    28,891.54/39,868.50 = 16,143.76/x
  3. Step 3: Cross multiply
    28,891.54x = 39,868.50 × 16,143.76
  4. Step 4: Simplify right side
    28,891.54x = 643,627,495.56
  5. Step 5: Solve for x
    x = 643,627,495.56/28,891.54
  6. Step 6: Final answer
    x = 22,277.37

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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.