Home / 8,265.33-12,402.63-6,420.15

Finding the Fourth Proportional to 8,265.33, 12,402.63 and 6,420.15

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Solution

The fourth proportional to 8,265.33, 12,402.63 and 6,420.15 is: 9,633.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,265.33 : 12,402.63 = 6,420.15 : x
  2. Step 2: Convert to fraction form
    8,265.33/12,402.63 = 6,420.15/x
  3. Step 3: Cross multiply
    8,265.33x = 12,402.63 × 6,420.15
  4. Step 4: Simplify right side
    8,265.33x = 79,626,744.99
  5. Step 5: Solve for x
    x = 79,626,744.99/8,265.33
  6. Step 6: Final answer
    x = 9,633.83

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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.