Home / 11,426.43-15,769.94-6,390.93

Finding the Fourth Proportional to 11,426.43, 15,769.94 and 6,390.93

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Solution

The fourth proportional to 11,426.43, 15,769.94 and 6,390.93 is: 8,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.43 : 15,769.94 = 6,390.93 : x
  2. Step 2: Convert to fraction form
    11,426.43/15,769.94 = 6,390.93/x
  3. Step 3: Cross multiply
    11,426.43x = 15,769.94 × 6,390.93
  4. Step 4: Simplify right side
    11,426.43x = 100,784,582.64
  5. Step 5: Solve for x
    x = 100,784,582.64/11,426.43
  6. Step 6: Final answer
    x = 8,820.30

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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.