Home / 20,102.55-27,723.36-12,549.58

Finding the Fourth Proportional to 20,102.55, 27,723.36 and 12,549.58

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Solution

The fourth proportional to 20,102.55, 27,723.36 and 12,549.58 is: 17,307.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.55 : 27,723.36 = 12,549.58 : x
  2. Step 2: Convert to fraction form
    20,102.55/27,723.36 = 12,549.58/x
  3. Step 3: Cross multiply
    20,102.55x = 27,723.36 × 12,549.58
  4. Step 4: Simplify right side
    20,102.55x = 347,916,657.89
  5. Step 5: Solve for x
    x = 347,916,657.89/20,102.55
  6. Step 6: Final answer
    x = 17,307.09

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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.