Home / 8,420.21-12,633.15-5,296.54

Finding the Fourth Proportional to 8,420.21, 12,633.15 and 5,296.54

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Solution

The fourth proportional to 8,420.21, 12,633.15 and 5,296.54 is: 7,946.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.21 : 12,633.15 = 5,296.54 : x
  2. Step 2: Convert to fraction form
    8,420.21/12,633.15 = 5,296.54/x
  3. Step 3: Cross multiply
    8,420.21x = 12,633.15 × 5,296.54
  4. Step 4: Simplify right side
    8,420.21x = 66,911,921.14
  5. Step 5: Solve for x
    x = 66,911,921.14/8,420.21
  6. Step 6: Final answer
    x = 7,946.59

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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.