Home / 11,715.84-16,167.60-6,998.40

Finding the Fourth Proportional to 11,715.84, 16,167.60 and 6,998.40

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Solution

The fourth proportional to 11,715.84, 16,167.60 and 6,998.40 is: 9,657.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.84 : 16,167.60 = 6,998.40 : x
  2. Step 2: Convert to fraction form
    11,715.84/16,167.60 = 6,998.40/x
  3. Step 3: Cross multiply
    11,715.84x = 16,167.60 × 6,998.40
  4. Step 4: Simplify right side
    11,715.84x = 113,147,331.84
  5. Step 5: Solve for x
    x = 113,147,331.84/11,715.84
  6. Step 6: Final answer
    x = 9,657.64

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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.