Home / 14,716.36-20,308.56-8,428.76

Finding the Fourth Proportional to 14,716.36, 20,308.56 and 8,428.76

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Solution

The fourth proportional to 14,716.36, 20,308.56 and 8,428.76 is: 11,631.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,716.36 : 20,308.56 = 8,428.76 : x
  2. Step 2: Convert to fraction form
    14,716.36/20,308.56 = 8,428.76/x
  3. Step 3: Cross multiply
    14,716.36x = 20,308.56 × 8,428.76
  4. Step 4: Simplify right side
    14,716.36x = 171,175,978.19
  5. Step 5: Solve for x
    x = 171,175,978.19/14,716.36
  6. Step 6: Final answer
    x = 11,631.68

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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.