Home / 12,321.28-17,001.40-7,016.20

Finding the Fourth Proportional to 12,321.28, 17,001.40 and 7,016.20

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Solution

The fourth proportional to 12,321.28, 17,001.40 and 7,016.20 is: 9,681.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.28 : 17,001.40 = 7,016.20 : x
  2. Step 2: Convert to fraction form
    12,321.28/17,001.40 = 7,016.20/x
  3. Step 3: Cross multiply
    12,321.28x = 17,001.40 × 7,016.20
  4. Step 4: Simplify right side
    12,321.28x = 119,285,222.68
  5. Step 5: Solve for x
    x = 119,285,222.68/12,321.28
  6. Step 6: Final answer
    x = 9,681.24

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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.