Home / 10,381.20-14,325.96-6,400.72

Finding the Fourth Proportional to 10,381.20, 14,325.96 and 6,400.72

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Solution

The fourth proportional to 10,381.20, 14,325.96 and 6,400.72 is: 8,832.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.20 : 14,325.96 = 6,400.72 : x
  2. Step 2: Convert to fraction form
    10,381.20/14,325.96 = 6,400.72/x
  3. Step 3: Cross multiply
    10,381.20x = 14,325.96 × 6,400.72
  4. Step 4: Simplify right side
    10,381.20x = 91,696,458.69
  5. Step 5: Solve for x
    x = 91,696,458.69/10,381.20
  6. Step 6: Final answer
    x = 8,832.93

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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.