Home / 12,398.88-17,111.60-6,810.96

Finding the Fourth Proportional to 12,398.88, 17,111.60 and 6,810.96

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Solution

The fourth proportional to 12,398.88, 17,111.60 and 6,810.96 is: 9,399.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.88 : 17,111.60 = 6,810.96 : x
  2. Step 2: Convert to fraction form
    12,398.88/17,111.60 = 6,810.96/x
  3. Step 3: Cross multiply
    12,398.88x = 17,111.60 × 6,810.96
  4. Step 4: Simplify right side
    12,398.88x = 116,546,423.14
  5. Step 5: Solve for x
    x = 116,546,423.14/12,398.88
  6. Step 6: Final answer
    x = 9,399.75

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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.