Home / 21,454.12-29,610.12-12,506.86

Finding the Fourth Proportional to 21,454.12, 29,610.12 and 12,506.86

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Solution

The fourth proportional to 21,454.12, 29,610.12 and 12,506.86 is: 17,261.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,454.12 : 29,610.12 = 12,506.86 : x
  2. Step 2: Convert to fraction form
    21,454.12/29,610.12 = 12,506.86/x
  3. Step 3: Cross multiply
    21,454.12x = 29,610.12 × 12,506.86
  4. Step 4: Simplify right side
    21,454.12x = 370,329,625.42
  5. Step 5: Solve for x
    x = 370,329,625.42/21,454.12
  6. Step 6: Final answer
    x = 17,261.47

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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.