Home / 11,415.20-17,126.08-4,750.40

Finding the Fourth Proportional to 11,415.20, 17,126.08 and 4,750.40

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Solution

The fourth proportional to 11,415.20, 17,126.08 and 4,750.40 is: 7,126.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.20 : 17,126.08 = 4,750.40 : x
  2. Step 2: Convert to fraction form
    11,415.20/17,126.08 = 4,750.40/x
  3. Step 3: Cross multiply
    11,415.20x = 17,126.08 × 4,750.40
  4. Step 4: Simplify right side
    11,415.20x = 81,355,730.43
  5. Step 5: Solve for x
    x = 81,355,730.43/11,415.20
  6. Step 6: Final answer
    x = 7,126.96

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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.