Home / 21,291.02-29,388.42-13,737.56

Finding the Fourth Proportional to 21,291.02, 29,388.42 and 13,737.56

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Solution

The fourth proportional to 21,291.02, 29,388.42 and 13,737.56 is: 18,962.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.02 : 29,388.42 = 13,737.56 : x
  2. Step 2: Convert to fraction form
    21,291.02/29,388.42 = 13,737.56/x
  3. Step 3: Cross multiply
    21,291.02x = 29,388.42 × 13,737.56
  4. Step 4: Simplify right side
    21,291.02x = 403,725,183.06
  5. Step 5: Solve for x
    x = 403,725,183.06/21,291.02
  6. Step 6: Final answer
    x = 18,962.23

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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.