Home / 28,619.86-39,497.70-15,874.30

Finding the Fourth Proportional to 28,619.86, 39,497.70 and 15,874.30

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Solution

The fourth proportional to 28,619.86, 39,497.70 and 15,874.30 is: 21,907.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,619.86 : 39,497.70 = 15,874.30 : x
  2. Step 2: Convert to fraction form
    28,619.86/39,497.70 = 15,874.30/x
  3. Step 3: Cross multiply
    28,619.86x = 39,497.70 × 15,874.30
  4. Step 4: Simplify right side
    28,619.86x = 626,998,339.11
  5. Step 5: Solve for x
    x = 626,998,339.11/28,619.86
  6. Step 6: Final answer
    x = 21,907.81

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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.