Home / 12,318.86-17,001.38-7,012.82

Finding the Fourth Proportional to 12,318.86, 17,001.38 and 7,012.82

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Solution

The fourth proportional to 12,318.86, 17,001.38 and 7,012.82 is: 9,678.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.86 : 17,001.38 = 7,012.82 : x
  2. Step 2: Convert to fraction form
    12,318.86/17,001.38 = 7,012.82/x
  3. Step 3: Cross multiply
    12,318.86x = 17,001.38 × 7,012.82
  4. Step 4: Simplify right side
    12,318.86x = 119,227,617.69
  5. Step 5: Solve for x
    x = 119,227,617.69/12,318.86
  6. Step 6: Final answer
    x = 9,678.46

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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.