Home / 10,380.16-14,319.99-6,399.82

Finding the Fourth Proportional to 10,380.16, 14,319.99 and 6,399.82

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Solution

The fourth proportional to 10,380.16, 14,319.99 and 6,399.82 is: 8,828.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.16 : 14,319.99 = 6,399.82 : x
  2. Step 2: Convert to fraction form
    10,380.16/14,319.99 = 6,399.82/x
  3. Step 3: Cross multiply
    10,380.16x = 14,319.99 × 6,399.82
  4. Step 4: Simplify right side
    10,380.16x = 91,645,358.40
  5. Step 5: Solve for x
    x = 91,645,358.40/10,380.16
  6. Step 6: Final answer
    x = 8,828.90

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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.