Home / 21,180.56-29,228.76-11,749.04

Finding the Fourth Proportional to 21,180.56, 29,228.76 and 11,749.04

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Solution

The fourth proportional to 21,180.56, 29,228.76 and 11,749.04 is: 16,213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.56 : 29,228.76 = 11,749.04 : x
  2. Step 2: Convert to fraction form
    21,180.56/29,228.76 = 11,749.04/x
  3. Step 3: Cross multiply
    21,180.56x = 29,228.76 × 11,749.04
  4. Step 4: Simplify right side
    21,180.56x = 343,409,870.39
  5. Step 5: Solve for x
    x = 343,409,870.39/21,180.56
  6. Step 6: Final answer
    x = 16,213.45

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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.