Home / 28,642.86-39,519.07-18,571.72

Finding the Fourth Proportional to 28,642.86, 39,519.07 and 18,571.72

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Solution

The fourth proportional to 28,642.86, 39,519.07 and 18,571.72 is: 25,623.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,642.86 : 39,519.07 = 18,571.72 : x
  2. Step 2: Convert to fraction form
    28,642.86/39,519.07 = 18,571.72/x
  3. Step 3: Cross multiply
    28,642.86x = 39,519.07 × 18,571.72
  4. Step 4: Simplify right side
    28,642.86x = 733,937,102.70
  5. Step 5: Solve for x
    x = 733,937,102.70/28,642.86
  6. Step 6: Final answer
    x = 25,623.74

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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.