Home / 21,775.64-30,052.10-12,824.88

Finding the Fourth Proportional to 21,775.64, 30,052.10 and 12,824.88

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Solution

The fourth proportional to 21,775.64, 30,052.10 and 12,824.88 is: 17,699.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.64 : 30,052.10 = 12,824.88 : x
  2. Step 2: Convert to fraction form
    21,775.64/30,052.10 = 12,824.88/x
  3. Step 3: Cross multiply
    21,775.64x = 30,052.10 × 12,824.88
  4. Step 4: Simplify right side
    21,775.64x = 385,414,592.52
  5. Step 5: Solve for x
    x = 385,414,592.52/21,775.64
  6. Step 6: Final answer
    x = 17,699.35

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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.