Home / 11,426.07-15,767.88-6,390.30

Finding the Fourth Proportional to 11,426.07, 15,767.88 and 6,390.30

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Solution

The fourth proportional to 11,426.07, 15,767.88 and 6,390.30 is: 8,818.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.07 : 15,767.88 = 6,390.30 : x
  2. Step 2: Convert to fraction form
    11,426.07/15,767.88 = 6,390.30/x
  3. Step 3: Cross multiply
    11,426.07x = 15,767.88 × 6,390.30
  4. Step 4: Simplify right side
    11,426.07x = 100,761,483.56
  5. Step 5: Solve for x
    x = 100,761,483.56/11,426.07
  6. Step 6: Final answer
    x = 8,818.56

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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.