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Finding the Fourth Proportional to 20,534.01, 28,334.34 and 12,039

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Solution

The fourth proportional to 20,534.01, 28,334.34 and 12,039 is: 16,612.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.01 : 28,334.34 = 12,039 : x
  2. Step 2: Convert to fraction form
    20,534.01/28,334.34 = 12,039/x
  3. Step 3: Cross multiply
    20,534.01x = 28,334.34 × 12,039
  4. Step 4: Simplify right side
    20,534.01x = 341,117,119.26
  5. Step 5: Solve for x
    x = 341,117,119.26/20,534.01
  6. Step 6: Final answer
    x = 16,612.30

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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.