Home / 28,207.86-38,914.32-18,134.44

Finding the Fourth Proportional to 28,207.86, 38,914.32 and 18,134.44

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Solution

The fourth proportional to 28,207.86, 38,914.32 and 18,134.44 is: 25,017.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,207.86 : 38,914.32 = 18,134.44 : x
  2. Step 2: Convert to fraction form
    28,207.86/38,914.32 = 18,134.44/x
  3. Step 3: Cross multiply
    28,207.86x = 38,914.32 × 18,134.44
  4. Step 4: Simplify right side
    28,207.86x = 705,689,401.18
  5. Step 5: Solve for x
    x = 705,689,401.18/28,207.86
  6. Step 6: Final answer
    x = 25,017.47

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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.