Home / 14,250.60-21,378.85-7,138.49

Finding the Fourth Proportional to 14,250.60, 21,378.85 and 7,138.49

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Solution

The fourth proportional to 14,250.60, 21,378.85 and 7,138.49 is: 10,709.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,250.60 : 21,378.85 = 7,138.49 : x
  2. Step 2: Convert to fraction form
    14,250.60/21,378.85 = 7,138.49/x
  3. Step 3: Cross multiply
    14,250.60x = 21,378.85 × 7,138.49
  4. Step 4: Simplify right side
    14,250.60x = 152,612,706.94
  5. Step 5: Solve for x
    x = 152,612,706.94/14,250.60
  6. Step 6: Final answer
    x = 10,709.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.