Home / 10,385.55-14,327.99-6,399.74

Finding the Fourth Proportional to 10,385.55, 14,327.99 and 6,399.74

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Solution

The fourth proportional to 10,385.55, 14,327.99 and 6,399.74 is: 8,829.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.55 : 14,327.99 = 6,399.74 : x
  2. Step 2: Convert to fraction form
    10,385.55/14,327.99 = 6,399.74/x
  3. Step 3: Cross multiply
    10,385.55x = 14,327.99 × 6,399.74
  4. Step 4: Simplify right side
    10,385.55x = 91,695,438.54
  5. Step 5: Solve for x
    x = 91,695,438.54/10,385.55
  6. Step 6: Final answer
    x = 8,829.14

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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.