Home / 21,276.42-29,360.92-11,844.78

Finding the Fourth Proportional to 21,276.42, 29,360.92 and 11,844.78

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Solution

The fourth proportional to 21,276.42, 29,360.92 and 11,844.78 is: 16,345.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.42 : 29,360.92 = 11,844.78 : x
  2. Step 2: Convert to fraction form
    21,276.42/29,360.92 = 11,844.78/x
  3. Step 3: Cross multiply
    21,276.42x = 29,360.92 × 11,844.78
  4. Step 4: Simplify right side
    21,276.42x = 347,773,638.00
  5. Step 5: Solve for x
    x = 347,773,638.00/21,276.42
  6. Step 6: Final answer
    x = 16,345.50

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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.