Home / 11,683.85-16,123.75-6,378.75

Finding the Fourth Proportional to 11,683.85, 16,123.75 and 6,378.75

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Solution

The fourth proportional to 11,683.85, 16,123.75 and 6,378.75 is: 8,802.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,683.85 : 16,123.75 = 6,378.75 : x
  2. Step 2: Convert to fraction form
    11,683.85/16,123.75 = 6,378.75/x
  3. Step 3: Cross multiply
    11,683.85x = 16,123.75 × 6,378.75
  4. Step 4: Simplify right side
    11,683.85x = 102,849,370.31
  5. Step 5: Solve for x
    x = 102,849,370.31/11,683.85
  6. Step 6: Final answer
    x = 8,802.70

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Half scale
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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.