Home / 28,556.98-39,408.95-15,811.34

Finding the Fourth Proportional to 28,556.98, 39,408.95 and 15,811.34

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Solution

The fourth proportional to 28,556.98, 39,408.95 and 15,811.34 is: 21,819.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.98 : 39,408.95 = 15,811.34 : x
  2. Step 2: Convert to fraction form
    28,556.98/39,408.95 = 15,811.34/x
  3. Step 3: Cross multiply
    28,556.98x = 39,408.95 × 15,811.34
  4. Step 4: Simplify right side
    28,556.98x = 623,108,149.98
  5. Step 5: Solve for x
    x = 623,108,149.98/28,556.98
  6. Step 6: Final answer
    x = 21,819.82

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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.