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Finding the Fourth Proportional to 20,130.76, 27,783.00 and 12,173.04

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Solution

The fourth proportional to 20,130.76, 27,783.00 and 12,173.04 is: 16,800.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.76 : 27,783.00 = 12,173.04 : x
  2. Step 2: Convert to fraction form
    20,130.76/27,783.00 = 12,173.04/x
  3. Step 3: Cross multiply
    20,130.76x = 27,783.00 × 12,173.04
  4. Step 4: Simplify right side
    20,130.76x = 338,203,461.84
  5. Step 5: Solve for x
    x = 338,203,461.84/20,130.76
  6. Step 6: Final answer
    x = 16,800.34

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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.