Home / 21,012.13-29,008.61-13,948.21

Finding the Fourth Proportional to 21,012.13, 29,008.61 and 13,948.21

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Solution

The fourth proportional to 21,012.13, 29,008.61 and 13,948.21 is: 19,256.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.13 : 29,008.61 = 13,948.21 : x
  2. Step 2: Convert to fraction form
    21,012.13/29,008.61 = 13,948.21/x
  3. Step 3: Cross multiply
    21,012.13x = 29,008.61 × 13,948.21
  4. Step 4: Simplify right side
    21,012.13x = 404,618,184.09
  5. Step 5: Solve for x
    x = 404,618,184.09/21,012.13
  6. Step 6: Final answer
    x = 19,256.41

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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.