Home / 14,268.40-21,402.60-13,903.90

Finding the Fourth Proportional to 14,268.40, 21,402.60 and 13,903.90

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Solution

The fourth proportional to 14,268.40, 21,402.60 and 13,903.90 is: 20,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,268.40 : 21,402.60 = 13,903.90 : x
  2. Step 2: Convert to fraction form
    14,268.40/21,402.60 = 13,903.90/x
  3. Step 3: Cross multiply
    14,268.40x = 21,402.60 × 13,903.90
  4. Step 4: Simplify right side
    14,268.40x = 297,579,610.14
  5. Step 5: Solve for x
    x = 297,579,610.14/14,268.40
  6. Step 6: Final answer
    x = 20,855.85

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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.