Home / 10,380.66-14,320.68-6,400.32

Finding the Fourth Proportional to 10,380.66, 14,320.68 and 6,400.32

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Solution

The fourth proportional to 10,380.66, 14,320.68 and 6,400.32 is: 8,829.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.66 : 14,320.68 = 6,400.32 : x
  2. Step 2: Convert to fraction form
    10,380.66/14,320.68 = 6,400.32/x
  3. Step 3: Cross multiply
    10,380.66x = 14,320.68 × 6,400.32
  4. Step 4: Simplify right side
    10,380.66x = 91,656,934.62
  5. Step 5: Solve for x
    x = 91,656,934.62/10,380.66
  6. Step 6: Final answer
    x = 8,829.59

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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.