Home / 20,462.68-28,240-12,506.44

Finding the Fourth Proportional to 20,462.68, 28,240 and 12,506.44

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Solution

The fourth proportional to 20,462.68, 28,240 and 12,506.44 is: 17,259.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,462.68 : 28,240 = 12,506.44 : x
  2. Step 2: Convert to fraction form
    20,462.68/28,240 = 12,506.44/x
  3. Step 3: Cross multiply
    20,462.68x = 28,240 × 12,506.44
  4. Step 4: Simplify right side
    20,462.68x = 353,181,865.60
  5. Step 5: Solve for x
    x = 353,181,865.60/20,462.68
  6. Step 6: Final answer
    x = 17,259.80

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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.