Home / 11,947.85-16,488.90-7,168

Finding the Fourth Proportional to 11,947.85, 16,488.90 and 7,168

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Solution

The fourth proportional to 11,947.85, 16,488.90 and 7,168 is: 9,892.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.85 : 16,488.90 = 7,168 : x
  2. Step 2: Convert to fraction form
    11,947.85/16,488.90 = 7,168/x
  3. Step 3: Cross multiply
    11,947.85x = 16,488.90 × 7,168
  4. Step 4: Simplify right side
    11,947.85x = 118,192,435.20
  5. Step 5: Solve for x
    x = 118,192,435.20/11,947.85
  6. Step 6: Final answer
    x = 9,892.36

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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.