Home / 28,811.45-39,767.33-18,767.45

Finding the Fourth Proportional to 28,811.45, 39,767.33 and 18,767.45

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Solution

The fourth proportional to 28,811.45, 39,767.33 and 18,767.45 is: 25,903.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.45 : 39,767.33 = 18,767.45 : x
  2. Step 2: Convert to fraction form
    28,811.45/39,767.33 = 18,767.45/x
  3. Step 3: Cross multiply
    28,811.45x = 39,767.33 × 18,767.45
  4. Step 4: Simplify right side
    28,811.45x = 746,331,523.75
  5. Step 5: Solve for x
    x = 746,331,523.75/28,811.45
  6. Step 6: Final answer
    x = 25,903.99

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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.