Home / 10,125.44-13,971.84-6,398.72

Finding the Fourth Proportional to 10,125.44, 13,971.84 and 6,398.72

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Solution

The fourth proportional to 10,125.44, 13,971.84 and 6,398.72 is: 8,829.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,125.44 : 13,971.84 = 6,398.72 : x
  2. Step 2: Convert to fraction form
    10,125.44/13,971.84 = 6,398.72/x
  3. Step 3: Cross multiply
    10,125.44x = 13,971.84 × 6,398.72
  4. Step 4: Simplify right side
    10,125.44x = 89,401,892.04
  5. Step 5: Solve for x
    x = 89,401,892.04/10,125.44
  6. Step 6: Final answer
    x = 8,829.43

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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.