Home / 11,426.57-15,770.12-6,391.07

Finding the Fourth Proportional to 11,426.57, 15,770.12 and 6,391.07

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Solution

The fourth proportional to 11,426.57, 15,770.12 and 6,391.07 is: 8,820.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.57 : 15,770.12 = 6,391.07 : x
  2. Step 2: Convert to fraction form
    11,426.57/15,770.12 = 6,391.07/x
  3. Step 3: Cross multiply
    11,426.57x = 15,770.12 × 6,391.07
  4. Step 4: Simplify right side
    11,426.57x = 100,787,830.02
  5. Step 5: Solve for x
    x = 100,787,830.02/11,426.57
  6. Step 6: Final answer
    x = 8,820.48

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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.