Home / 10,821.12-14,933.16-6,105.30

Finding the Fourth Proportional to 10,821.12, 14,933.16 and 6,105.30

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Solution

The fourth proportional to 10,821.12, 14,933.16 and 6,105.30 is: 8,425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.12 : 14,933.16 = 6,105.30 : x
  2. Step 2: Convert to fraction form
    10,821.12/14,933.16 = 6,105.30/x
  3. Step 3: Cross multiply
    10,821.12x = 14,933.16 × 6,105.30
  4. Step 4: Simplify right side
    10,821.12x = 91,171,421.75
  5. Step 5: Solve for x
    x = 91,171,421.75/10,821.12
  6. Step 6: Final answer
    x = 8,425.32

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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.