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Finding the Fourth Proportional to 20,863.00, 28,790.94 and 11,302.90

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Solution

The fourth proportional to 20,863.00, 28,790.94 and 11,302.90 is: 15,598.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.00 : 28,790.94 = 11,302.90 : x
  2. Step 2: Convert to fraction form
    20,863.00/28,790.94 = 11,302.90/x
  3. Step 3: Cross multiply
    20,863.00x = 28,790.94 × 11,302.90
  4. Step 4: Simplify right side
    20,863.00x = 325,420,971.77
  5. Step 5: Solve for x
    x = 325,420,971.77/20,863.00
  6. Step 6: Final answer
    x = 15,598.00

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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.