Home / 20,963.64-31,416.80-11,589.76

Finding the Fourth Proportional to 20,963.64, 31,416.80 and 11,589.76

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Solution

The fourth proportional to 20,963.64, 31,416.80 and 11,589.76 is: 17,368.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.64 : 31,416.80 = 11,589.76 : x
  2. Step 2: Convert to fraction form
    20,963.64/31,416.80 = 11,589.76/x
  3. Step 3: Cross multiply
    20,963.64x = 31,416.80 × 11,589.76
  4. Step 4: Simplify right side
    20,963.64x = 364,113,171.97
  5. Step 5: Solve for x
    x = 364,113,171.97/20,963.64
  6. Step 6: Final answer
    x = 17,368.80

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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.