Home / 14,153.40-21,230.40-5,147.21

Finding the Fourth Proportional to 14,153.40, 21,230.40 and 5,147.21

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Solution

The fourth proportional to 14,153.40, 21,230.40 and 5,147.21 is: 7,720.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,153.40 : 21,230.40 = 5,147.21 : x
  2. Step 2: Convert to fraction form
    14,153.40/21,230.40 = 5,147.21/x
  3. Step 3: Cross multiply
    14,153.40x = 21,230.40 × 5,147.21
  4. Step 4: Simplify right side
    14,153.40x = 109,277,399.56
  5. Step 5: Solve for x
    x = 109,277,399.56/14,153.40
  6. Step 6: Final answer
    x = 7,720.93

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1.5x scale

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.