Home / 14,135.40-21,203.10-13,876.20

Finding the Fourth Proportional to 14,135.40, 21,203.10 and 13,876.20

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Solution

The fourth proportional to 14,135.40, 21,203.10 and 13,876.20 is: 20,814.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,135.40 : 21,203.10 = 13,876.20 : x
  2. Step 2: Convert to fraction form
    14,135.40/21,203.10 = 13,876.20/x
  3. Step 3: Cross multiply
    14,135.40x = 21,203.10 × 13,876.20
  4. Step 4: Simplify right side
    14,135.40x = 294,218,456.22
  5. Step 5: Solve for x
    x = 294,218,456.22/14,135.40
  6. Step 6: Final answer
    x = 20,814.30

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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.