Home / 8,300.90-12,415.35-7,429.70

Finding the Fourth Proportional to 8,300.90, 12,415.35 and 7,429.70

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Solution

The fourth proportional to 8,300.90, 12,415.35 and 7,429.70 is: 11,112.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,300.90 : 12,415.35 = 7,429.70 : x
  2. Step 2: Convert to fraction form
    8,300.90/12,415.35 = 7,429.70/x
  3. Step 3: Cross multiply
    8,300.90x = 12,415.35 × 7,429.70
  4. Step 4: Simplify right side
    8,300.90x = 92,242,325.90
  5. Step 5: Solve for x
    x = 92,242,325.90/8,300.90
  6. Step 6: Final answer
    x = 11,112.33

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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.