Home / 14,140.85-21,211.07-4,778.87

Finding the Fourth Proportional to 14,140.85, 21,211.07 and 4,778.87

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Solution

The fourth proportional to 14,140.85, 21,211.07 and 4,778.87 is: 7,168.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.85 : 21,211.07 = 4,778.87 : x
  2. Step 2: Convert to fraction form
    14,140.85/21,211.07 = 4,778.87/x
  3. Step 3: Cross multiply
    14,140.85x = 21,211.07 × 4,778.87
  4. Step 4: Simplify right side
    14,140.85x = 101,364,816.14
  5. Step 5: Solve for x
    x = 101,364,816.14/14,140.85
  6. Step 6: Final answer
    x = 7,168.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.