Home / 11,314.80-16,969.50-3,415.68

Finding the Fourth Proportional to 11,314.80, 16,969.50 and 3,415.68

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Solution

The fourth proportional to 11,314.80, 16,969.50 and 3,415.68 is: 5,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,314.80 : 16,969.50 = 3,415.68 : x
  2. Step 2: Convert to fraction form
    11,314.80/16,969.50 = 3,415.68/x
  3. Step 3: Cross multiply
    11,314.80x = 16,969.50 × 3,415.68
  4. Step 4: Simplify right side
    11,314.80x = 57,962,381.76
  5. Step 5: Solve for x
    x = 57,962,381.76/11,314.80
  6. Step 6: Final answer
    x = 5,122.70

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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.