Home / 11,021.84-15,211.90-7,238.32

Finding the Fourth Proportional to 11,021.84, 15,211.90 and 7,238.32

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Solution

The fourth proportional to 11,021.84, 15,211.90 and 7,238.32 is: 9,990.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,021.84 : 15,211.90 = 7,238.32 : x
  2. Step 2: Convert to fraction form
    11,021.84/15,211.90 = 7,238.32/x
  3. Step 3: Cross multiply
    11,021.84x = 15,211.90 × 7,238.32
  4. Step 4: Simplify right side
    11,021.84x = 110,108,600.01
  5. Step 5: Solve for x
    x = 110,108,600.01/11,021.84
  6. Step 6: Final answer
    x = 9,990.04

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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.