Home / 12,984.12-17,918.06-7,015.80

Finding the Fourth Proportional to 12,984.12, 17,918.06 and 7,015.80

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Solution

The fourth proportional to 12,984.12, 17,918.06 and 7,015.80 is: 9,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,984.12 : 17,918.06 = 7,015.80 : x
  2. Step 2: Convert to fraction form
    12,984.12/17,918.06 = 7,015.80/x
  3. Step 3: Cross multiply
    12,984.12x = 17,918.06 × 7,015.80
  4. Step 4: Simplify right side
    12,984.12x = 125,709,525.35
  5. Step 5: Solve for x
    x = 125,709,525.35/12,984.12
  6. Step 6: Final answer
    x = 9,681.79

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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.