Home / 21,135.60-31,674.24-15,935.76

Finding the Fourth Proportional to 21,135.60, 31,674.24 and 15,935.76

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Solution

The fourth proportional to 21,135.60, 31,674.24 and 15,935.76 is: 23,881.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.60 : 31,674.24 = 15,935.76 : x
  2. Step 2: Convert to fraction form
    21,135.60/31,674.24 = 15,935.76/x
  3. Step 3: Cross multiply
    21,135.60x = 31,674.24 × 15,935.76
  4. Step 4: Simplify right side
    21,135.60x = 504,753,086.82
  5. Step 5: Solve for x
    x = 504,753,086.82/21,135.60
  6. Step 6: Final answer
    x = 23,881.65

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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.