Home / 21,014.72-29,000.22-11,455.16

Finding the Fourth Proportional to 21,014.72, 29,000.22 and 11,455.16

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Solution

The fourth proportional to 21,014.72, 29,000.22 and 11,455.16 is: 15,808.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.72 : 29,000.22 = 11,455.16 : x
  2. Step 2: Convert to fraction form
    21,014.72/29,000.22 = 11,455.16/x
  3. Step 3: Cross multiply
    21,014.72x = 29,000.22 × 11,455.16
  4. Step 4: Simplify right side
    21,014.72x = 332,202,160.14
  5. Step 5: Solve for x
    x = 332,202,160.14/21,014.72
  6. Step 6: Final answer
    x = 15,808.07

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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.