Home / 21,177.84-31,766.76-8,695.74

Finding the Fourth Proportional to 21,177.84, 31,766.76 and 8,695.74

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Solution

The fourth proportional to 21,177.84, 31,766.76 and 8,695.74 is: 13,043.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.84 : 31,766.76 = 8,695.74 : x
  2. Step 2: Convert to fraction form
    21,177.84/31,766.76 = 8,695.74/x
  3. Step 3: Cross multiply
    21,177.84x = 31,766.76 × 8,695.74
  4. Step 4: Simplify right side
    21,177.84x = 276,235,485.60
  5. Step 5: Solve for x
    x = 276,235,485.60/21,177.84
  6. Step 6: Final answer
    x = 13,043.61

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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.