Home / 20,872.64-31,322.52-9,037.95

Finding the Fourth Proportional to 20,872.64, 31,322.52 and 9,037.95

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Solution

The fourth proportional to 20,872.64, 31,322.52 and 9,037.95 is: 13,562.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.64 : 31,322.52 = 9,037.95 : x
  2. Step 2: Convert to fraction form
    20,872.64/31,322.52 = 9,037.95/x
  3. Step 3: Cross multiply
    20,872.64x = 31,322.52 × 9,037.95
  4. Step 4: Simplify right side
    20,872.64x = 283,091,369.63
  5. Step 5: Solve for x
    x = 283,091,369.63/20,872.64
  6. Step 6: Final answer
    x = 13,562.80

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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.