Home / 10,915.95-16,377.11-3,520.25

Finding the Fourth Proportional to 10,915.95, 16,377.11 and 3,520.25

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Solution

The fourth proportional to 10,915.95, 16,377.11 and 3,520.25 is: 5,281.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.95 : 16,377.11 = 3,520.25 : x
  2. Step 2: Convert to fraction form
    10,915.95/16,377.11 = 3,520.25/x
  3. Step 3: Cross multiply
    10,915.95x = 16,377.11 × 3,520.25
  4. Step 4: Simplify right side
    10,915.95x = 57,651,421.99
  5. Step 5: Solve for x
    x = 57,651,421.99/10,915.95
  6. Step 6: Final answer
    x = 5,281.39

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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.