Home / 21,057.54-31,597.38-8,586.78

Finding the Fourth Proportional to 21,057.54, 31,597.38 and 8,586.78

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Solution

The fourth proportional to 21,057.54, 31,597.38 and 8,586.78 is: 12,884.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.54 : 31,597.38 = 8,586.78 : x
  2. Step 2: Convert to fraction form
    21,057.54/31,597.38 = 8,586.78/x
  3. Step 3: Cross multiply
    21,057.54x = 31,597.38 × 8,586.78
  4. Step 4: Simplify right side
    21,057.54x = 271,319,750.64
  5. Step 5: Solve for x
    x = 271,319,750.64/21,057.54
  6. Step 6: Final answer
    x = 12,884.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.