Home / 11,221.95-15,492.74-7,450.21

Finding the Fourth Proportional to 11,221.95, 15,492.74 and 7,450.21

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Solution

The fourth proportional to 11,221.95, 15,492.74 and 7,450.21 is: 10,285.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.95 : 15,492.74 = 7,450.21 : x
  2. Step 2: Convert to fraction form
    11,221.95/15,492.74 = 7,450.21/x
  3. Step 3: Cross multiply
    11,221.95x = 15,492.74 × 7,450.21
  4. Step 4: Simplify right side
    11,221.95x = 115,424,090.49
  5. Step 5: Solve for x
    x = 115,424,090.49/11,221.95
  6. Step 6: Final answer
    x = 10,285.56

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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.