Home / 10,915.20-16,373.64-3,896.70

Finding the Fourth Proportional to 10,915.20, 16,373.64 and 3,896.70

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Solution

The fourth proportional to 10,915.20, 16,373.64 and 3,896.70 is: 5,845.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.20 : 16,373.64 = 3,896.70 : x
  2. Step 2: Convert to fraction form
    10,915.20/16,373.64 = 3,896.70/x
  3. Step 3: Cross multiply
    10,915.20x = 16,373.64 × 3,896.70
  4. Step 4: Simplify right side
    10,915.20x = 63,803,162.99
  5. Step 5: Solve for x
    x = 63,803,162.99/10,915.20
  6. Step 6: Final answer
    x = 5,845.35

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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.