Home / 21,017.12-29,003.28-11,586.56

Finding the Fourth Proportional to 21,017.12, 29,003.28 and 11,586.56

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Solution

The fourth proportional to 21,017.12, 29,003.28 and 11,586.56 is: 15,989.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.12 : 29,003.28 = 11,586.56 : x
  2. Step 2: Convert to fraction form
    21,017.12/29,003.28 = 11,586.56/x
  3. Step 3: Cross multiply
    21,017.12x = 29,003.28 × 11,586.56
  4. Step 4: Simplify right side
    21,017.12x = 336,048,243.92
  5. Step 5: Solve for x
    x = 336,048,243.92/21,017.12
  6. Step 6: Final answer
    x = 15,989.26

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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.