Home / 14,197.77-21,129.05-13,724.75

Finding the Fourth Proportional to 14,197.77, 21,129.05 and 13,724.75

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Solution

The fourth proportional to 14,197.77, 21,129.05 and 13,724.75 is: 20,425.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,197.77 : 21,129.05 = 13,724.75 : x
  2. Step 2: Convert to fraction form
    14,197.77/21,129.05 = 13,724.75/x
  3. Step 3: Cross multiply
    14,197.77x = 21,129.05 × 13,724.75
  4. Step 4: Simplify right side
    14,197.77x = 289,991,016.12
  5. Step 5: Solve for x
    x = 289,991,016.12/14,197.77
  6. Step 6: Final answer
    x = 20,425.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.