Home / 21,020.73-29,008.47-11,461.20

Finding the Fourth Proportional to 21,020.73, 29,008.47 and 11,461.20

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Solution

The fourth proportional to 21,020.73, 29,008.47 and 11,461.20 is: 15,816.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.73 : 29,008.47 = 11,461.20 : x
  2. Step 2: Convert to fraction form
    21,020.73/29,008.47 = 11,461.20/x
  3. Step 3: Cross multiply
    21,020.73x = 29,008.47 × 11,461.20
  4. Step 4: Simplify right side
    21,020.73x = 332,471,876.36
  5. Step 5: Solve for x
    x = 332,471,876.36/21,020.73
  6. Step 6: Final answer
    x = 15,816.38

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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.