Home / 10,856.43-14,985-6,380.37

Finding the Fourth Proportional to 10,856.43, 14,985 and 6,380.37

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Solution

The fourth proportional to 10,856.43, 14,985 and 6,380.37 is: 8,806.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,856.43 : 14,985 = 6,380.37 : x
  2. Step 2: Convert to fraction form
    10,856.43/14,985 = 6,380.37/x
  3. Step 3: Cross multiply
    10,856.43x = 14,985 × 6,380.37
  4. Step 4: Simplify right side
    10,856.43x = 95,609,844.45
  5. Step 5: Solve for x
    x = 95,609,844.45/10,856.43
  6. Step 6: Final answer
    x = 8,806.75

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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.