Home / 11,271.07-15,539.90-7,230.75

Finding the Fourth Proportional to 11,271.07, 15,539.90 and 7,230.75

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Solution

The fourth proportional to 11,271.07, 15,539.90 and 7,230.75 is: 9,969.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.07 : 15,539.90 = 7,230.75 : x
  2. Step 2: Convert to fraction form
    11,271.07/15,539.90 = 7,230.75/x
  3. Step 3: Cross multiply
    11,271.07x = 15,539.90 × 7,230.75
  4. Step 4: Simplify right side
    11,271.07x = 112,365,131.93
  5. Step 5: Solve for x
    x = 112,365,131.93/11,271.07
  6. Step 6: Final answer
    x = 9,969.34

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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.