Home / 14,766.36-20,379.74-9,729.76

Finding the Fourth Proportional to 14,766.36, 20,379.74 and 9,729.76

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Solution

The fourth proportional to 14,766.36, 20,379.74 and 9,729.76 is: 13,428.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,766.36 : 20,379.74 = 9,729.76 : x
  2. Step 2: Convert to fraction form
    14,766.36/20,379.74 = 9,729.76/x
  3. Step 3: Cross multiply
    14,766.36x = 20,379.74 × 9,729.76
  4. Step 4: Simplify right side
    14,766.36x = 198,289,979.06
  5. Step 5: Solve for x
    x = 198,289,979.06/14,766.36
  6. Step 6: Final answer
    x = 13,428.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.