Home / 14,132.78-21,196.43-13,430.21

Finding the Fourth Proportional to 14,132.78, 21,196.43 and 13,430.21

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Solution

The fourth proportional to 14,132.78, 21,196.43 and 13,430.21 is: 20,142.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,132.78 : 21,196.43 = 13,430.21 : x
  2. Step 2: Convert to fraction form
    14,132.78/21,196.43 = 13,430.21/x
  3. Step 3: Cross multiply
    14,132.78x = 21,196.43 × 13,430.21
  4. Step 4: Simplify right side
    14,132.78x = 284,672,458.93
  5. Step 5: Solve for x
    x = 284,672,458.93/14,132.78
  6. Step 6: Final answer
    x = 20,142.71

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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.