Home / 21,017.25-31,530.87-7,166.25

Finding the Fourth Proportional to 21,017.25, 31,530.87 and 7,166.25

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Solution

The fourth proportional to 21,017.25, 31,530.87 and 7,166.25 is: 10,751.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.25 : 31,530.87 = 7,166.25 : x
  2. Step 2: Convert to fraction form
    21,017.25/31,530.87 = 7,166.25/x
  3. Step 3: Cross multiply
    21,017.25x = 31,530.87 × 7,166.25
  4. Step 4: Simplify right side
    21,017.25x = 225,958,097.14
  5. Step 5: Solve for x
    x = 225,958,097.14/21,017.25
  6. Step 6: Final answer
    x = 10,751.08

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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.