Home / 21,012.24-29,010.39-13,065.27

Finding the Fourth Proportional to 21,012.24, 29,010.39 and 13,065.27

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Solution

The fourth proportional to 21,012.24, 29,010.39 and 13,065.27 is: 18,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.24 : 29,010.39 = 13,065.27 : x
  2. Step 2: Convert to fraction form
    21,012.24/29,010.39 = 13,065.27/x
  3. Step 3: Cross multiply
    21,012.24x = 29,010.39 × 13,065.27
  4. Step 4: Simplify right side
    21,012.24x = 379,028,578.16
  5. Step 5: Solve for x
    x = 379,028,578.16/21,012.24
  6. Step 6: Final answer
    x = 18,038.47

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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.