Home / 12,398.08-17,109.12-6,808.96

Finding the Fourth Proportional to 12,398.08, 17,109.12 and 6,808.96

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Solution

The fourth proportional to 12,398.08, 17,109.12 and 6,808.96 is: 9,396.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.08 : 17,109.12 = 6,808.96 : x
  2. Step 2: Convert to fraction form
    12,398.08/17,109.12 = 6,808.96/x
  3. Step 3: Cross multiply
    12,398.08x = 17,109.12 × 6,808.96
  4. Step 4: Simplify right side
    12,398.08x = 116,495,313.72
  5. Step 5: Solve for x
    x = 116,495,313.72/12,398.08
  6. Step 6: Final answer
    x = 9,396.24

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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.