Home / 14,540.40-21,810.60-5,305.20

Finding the Fourth Proportional to 14,540.40, 21,810.60 and 5,305.20

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Solution

The fourth proportional to 14,540.40, 21,810.60 and 5,305.20 is: 7,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,540.40 : 21,810.60 = 5,305.20 : x
  2. Step 2: Convert to fraction form
    14,540.40/21,810.60 = 5,305.20/x
  3. Step 3: Cross multiply
    14,540.40x = 21,810.60 × 5,305.20
  4. Step 4: Simplify right side
    14,540.40x = 115,709,595.12
  5. Step 5: Solve for x
    x = 115,709,595.12/14,540.40
  6. Step 6: Final answer
    x = 7,957.80

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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.