Home / 28,411.99-42,608.76-13,416.79

Finding the Fourth Proportional to 28,411.99, 42,608.76 and 13,416.79

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Solution

The fourth proportional to 28,411.99, 42,608.76 and 13,416.79 is: 20,120.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,411.99 : 42,608.76 = 13,416.79 : x
  2. Step 2: Convert to fraction form
    28,411.99/42,608.76 = 13,416.79/x
  3. Step 3: Cross multiply
    28,411.99x = 42,608.76 × 13,416.79
  4. Step 4: Simplify right side
    28,411.99x = 571,672,745.87
  5. Step 5: Solve for x
    x = 571,672,745.87/28,411.99
  6. Step 6: Final answer
    x = 20,120.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.