Home / 20,507.52-28,296-13,056.96

Finding the Fourth Proportional to 20,507.52, 28,296 and 13,056.96

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Solution

The fourth proportional to 20,507.52, 28,296 and 13,056.96 is: 18,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.52 : 28,296 = 13,056.96 : x
  2. Step 2: Convert to fraction form
    20,507.52/28,296 = 13,056.96/x
  3. Step 3: Cross multiply
    20,507.52x = 28,296 × 13,056.96
  4. Step 4: Simplify right side
    20,507.52x = 369,459,740.16
  5. Step 5: Solve for x
    x = 369,459,740.16/20,507.52
  6. Step 6: Final answer
    x = 18,015.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.