Home / 21,354.08-29,468.31-12,406.60

Finding the Fourth Proportional to 21,354.08, 29,468.31 and 12,406.60

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Solution

The fourth proportional to 21,354.08, 29,468.31 and 12,406.60 is: 17,120.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,354.08 : 29,468.31 = 12,406.60 : x
  2. Step 2: Convert to fraction form
    21,354.08/29,468.31 = 12,406.60/x
  3. Step 3: Cross multiply
    21,354.08x = 29,468.31 × 12,406.60
  4. Step 4: Simplify right side
    21,354.08x = 365,601,534.85
  5. Step 5: Solve for x
    x = 365,601,534.85/21,354.08
  6. Step 6: Final answer
    x = 17,120.92

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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.