Home / 20,474.48-28,254.36-12,516.80

Finding the Fourth Proportional to 20,474.48, 28,254.36 and 12,516.80

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Solution

The fourth proportional to 20,474.48, 28,254.36 and 12,516.80 is: 17,272.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.48 : 28,254.36 = 12,516.80 : x
  2. Step 2: Convert to fraction form
    20,474.48/28,254.36 = 12,516.80/x
  3. Step 3: Cross multiply
    20,474.48x = 28,254.36 × 12,516.80
  4. Step 4: Simplify right side
    20,474.48x = 353,654,173.25
  5. Step 5: Solve for x
    x = 353,654,173.25/20,474.48
  6. Step 6: Final answer
    x = 17,272.93

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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.