Home / 10,428.08-14,390.96-6,449.12

Finding the Fourth Proportional to 10,428.08, 14,390.96 and 6,449.12

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Solution

The fourth proportional to 10,428.08, 14,390.96 and 6,449.12 is: 8,899.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.08 : 14,390.96 = 6,449.12 : x
  2. Step 2: Convert to fraction form
    10,428.08/14,390.96 = 6,449.12/x
  3. Step 3: Cross multiply
    10,428.08x = 14,390.96 × 6,449.12
  4. Step 4: Simplify right side
    10,428.08x = 92,809,027.96
  5. Step 5: Solve for x
    x = 92,809,027.96/10,428.08
  6. Step 6: Final answer
    x = 8,899.92

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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.