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Finding the Fourth Proportional to 8,515.56, 12,853.33 and 8,515.56

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Solution

The fourth proportional to 8,515.56, 12,853.33 and 8,515.56 is: 12,853.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.56 : 12,853.33 = 8,515.56 : x
  2. Step 2: Convert to fraction form
    8,515.56/12,853.33 = 8,515.56/x
  3. Step 3: Cross multiply
    8,515.56x = 12,853.33 × 8,515.56
  4. Step 4: Simplify right side
    8,515.56x = 109,453,302.81
  5. Step 5: Solve for x
    x = 109,453,302.81/8,515.56
  6. Step 6: Final answer
    x = 12,853.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.