Home / 10,435.45-14,415.76-8,415.90

Finding the Fourth Proportional to 10,435.45, 14,415.76 and 8,415.90

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Solution

The fourth proportional to 10,435.45, 14,415.76 and 8,415.90 is: 11,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,435.45 : 14,415.76 = 8,415.90 : x
  2. Step 2: Convert to fraction form
    10,435.45/14,415.76 = 8,415.90/x
  3. Step 3: Cross multiply
    10,435.45x = 14,415.76 × 8,415.90
  4. Step 4: Simplify right side
    10,435.45x = 121,321,480.43
  5. Step 5: Solve for x
    x = 121,321,480.43/10,435.45
  6. Step 6: Final answer
    x = 11,625.90

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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.