Home / 21,966.78-30,314.30-12,276.24

Finding the Fourth Proportional to 21,966.78, 30,314.30 and 12,276.24

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Solution

The fourth proportional to 21,966.78, 30,314.30 and 12,276.24 is: 16,941.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.78 : 30,314.30 = 12,276.24 : x
  2. Step 2: Convert to fraction form
    21,966.78/30,314.30 = 12,276.24/x
  3. Step 3: Cross multiply
    21,966.78x = 30,314.30 × 12,276.24
  4. Step 4: Simplify right side
    21,966.78x = 372,145,622.23
  5. Step 5: Solve for x
    x = 372,145,622.23/21,966.78
  6. Step 6: Final answer
    x = 16,941.29

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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.