Home / 9,921.91-14,880.36-3,678.49

Finding the Fourth Proportional to 9,921.91, 14,880.36 and 3,678.49

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Solution

The fourth proportional to 9,921.91, 14,880.36 and 3,678.49 is: 5,516.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.91 : 14,880.36 = 3,678.49 : x
  2. Step 2: Convert to fraction form
    9,921.91/14,880.36 = 3,678.49/x
  3. Step 3: Cross multiply
    9,921.91x = 14,880.36 × 3,678.49
  4. Step 4: Simplify right side
    9,921.91x = 54,737,255.46
  5. Step 5: Solve for x
    x = 54,737,255.46/9,921.91
  6. Step 6: Final answer
    x = 5,516.81

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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.