Home / 21,833.09-30,139.14-13,774.00

Finding the Fourth Proportional to 21,833.09, 30,139.14 and 13,774.00

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Solution

The fourth proportional to 21,833.09, 30,139.14 and 13,774.00 is: 19,014.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,833.09 : 30,139.14 = 13,774.00 : x
  2. Step 2: Convert to fraction form
    21,833.09/30,139.14 = 13,774.00/x
  3. Step 3: Cross multiply
    21,833.09x = 30,139.14 × 13,774.00
  4. Step 4: Simplify right side
    21,833.09x = 415,136,469.70
  5. Step 5: Solve for x
    x = 415,136,469.70/21,833.09
  6. Step 6: Final answer
    x = 19,014.09

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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.