Home / 10,436.15-14,415.68-7,778.94

Finding the Fourth Proportional to 10,436.15, 14,415.68 and 7,778.94

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Solution

The fourth proportional to 10,436.15, 14,415.68 and 7,778.94 is: 10,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,436.15 : 14,415.68 = 7,778.94 : x
  2. Step 2: Convert to fraction form
    10,436.15/14,415.68 = 7,778.94/x
  3. Step 3: Cross multiply
    10,436.15x = 14,415.68 × 7,778.94
  4. Step 4: Simplify right side
    10,436.15x = 112,138,729.23
  5. Step 5: Solve for x
    x = 112,138,729.23/10,436.15
  6. Step 6: Final answer
    x = 10,745.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.