Home / 10,168.83-14,028.84-6,390.78

Finding the Fourth Proportional to 10,168.83, 14,028.84 and 6,390.78

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Solution

The fourth proportional to 10,168.83, 14,028.84 and 6,390.78 is: 8,816.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,168.83 : 14,028.84 = 6,390.78 : x
  2. Step 2: Convert to fraction form
    10,168.83/14,028.84 = 6,390.78/x
  3. Step 3: Cross multiply
    10,168.83x = 14,028.84 × 6,390.78
  4. Step 4: Simplify right side
    10,168.83x = 89,655,230.10
  5. Step 5: Solve for x
    x = 89,655,230.10/10,168.83
  6. Step 6: Final answer
    x = 8,816.67

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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.