Home / 21,261.33-29,344.68-14,078.57

Finding the Fourth Proportional to 21,261.33, 29,344.68 and 14,078.57

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Solution

The fourth proportional to 21,261.33, 29,344.68 and 14,078.57 is: 19,431.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.33 : 29,344.68 = 14,078.57 : x
  2. Step 2: Convert to fraction form
    21,261.33/29,344.68 = 14,078.57/x
  3. Step 3: Cross multiply
    21,261.33x = 29,344.68 × 14,078.57
  4. Step 4: Simplify right side
    21,261.33x = 413,130,984.78
  5. Step 5: Solve for x
    x = 413,130,984.78/21,261.33
  6. Step 6: Final answer
    x = 19,431.10

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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.