Home / 20,725.34-28,610.69-12,224.79

Finding the Fourth Proportional to 20,725.34, 28,610.69 and 12,224.79

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Solution

The fourth proportional to 20,725.34, 28,610.69 and 12,224.79 is: 16,875.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.34 : 28,610.69 = 12,224.79 : x
  2. Step 2: Convert to fraction form
    20,725.34/28,610.69 = 12,224.79/x
  3. Step 3: Cross multiply
    20,725.34x = 28,610.69 × 12,224.79
  4. Step 4: Simplify right side
    20,725.34x = 349,759,615.88
  5. Step 5: Solve for x
    x = 349,759,615.88/20,725.34
  6. Step 6: Final answer
    x = 16,875.95

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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.