Home / 12,321.40-17,001.82-7,015.96

Finding the Fourth Proportional to 12,321.40, 17,001.82 and 7,015.96

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Solution

The fourth proportional to 12,321.40, 17,001.82 and 7,015.96 is: 9,681.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.40 : 17,001.82 = 7,015.96 : x
  2. Step 2: Convert to fraction form
    12,321.40/17,001.82 = 7,015.96/x
  3. Step 3: Cross multiply
    12,321.40x = 17,001.82 × 7,015.96
  4. Step 4: Simplify right side
    12,321.40x = 119,284,089.05
  5. Step 5: Solve for x
    x = 119,284,089.05/12,321.40
  6. Step 6: Final answer
    x = 9,681.05

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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.