Home / 20,462.64-28,239.59-13,644.89

Finding the Fourth Proportional to 20,462.64, 28,239.59 and 13,644.89

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Solution

The fourth proportional to 20,462.64, 28,239.59 and 13,644.89 is: 18,830.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,462.64 : 28,239.59 = 13,644.89 : x
  2. Step 2: Convert to fraction form
    20,462.64/28,239.59 = 13,644.89/x
  3. Step 3: Cross multiply
    20,462.64x = 28,239.59 × 13,644.89
  4. Step 4: Simplify right side
    20,462.64x = 385,326,098.01
  5. Step 5: Solve for x
    x = 385,326,098.01/20,462.64
  6. Step 6: Final answer
    x = 18,830.72

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1.5x scale

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.