Home / 28,451.86-39,254.43-15,874.18

Finding the Fourth Proportional to 28,451.86, 39,254.43 and 15,874.18

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Solution

The fourth proportional to 28,451.86, 39,254.43 and 15,874.18 is: 21,901.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.86 : 39,254.43 = 15,874.18 : x
  2. Step 2: Convert to fraction form
    28,451.86/39,254.43 = 15,874.18/x
  3. Step 3: Cross multiply
    28,451.86x = 39,254.43 × 15,874.18
  4. Step 4: Simplify right side
    28,451.86x = 623,131,887.62
  5. Step 5: Solve for x
    x = 623,131,887.62/28,451.86
  6. Step 6: Final answer
    x = 21,901.27

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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.