Home / 21,196.75-31,800.81-7,345.75

Finding the Fourth Proportional to 21,196.75, 31,800.81 and 7,345.75

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Solution

The fourth proportional to 21,196.75, 31,800.81 and 7,345.75 is: 11,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,196.75 : 31,800.81 = 7,345.75 : x
  2. Step 2: Convert to fraction form
    21,196.75/31,800.81 = 7,345.75/x
  3. Step 3: Cross multiply
    21,196.75x = 31,800.81 × 7,345.75
  4. Step 4: Simplify right side
    21,196.75x = 233,600,800.06
  5. Step 5: Solve for x
    x = 233,600,800.06/21,196.75
  6. Step 6: Final answer
    x = 11,020.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.