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Finding the Fourth Proportional to 10,485.74, 15,800.26 and 8,676.56

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Solution

The fourth proportional to 10,485.74, 15,800.26 and 8,676.56 is: 13,074.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,485.74 : 15,800.26 = 8,676.56 : x
  2. Step 2: Convert to fraction form
    10,485.74/15,800.26 = 8,676.56/x
  3. Step 3: Cross multiply
    10,485.74x = 15,800.26 × 8,676.56
  4. Step 4: Simplify right side
    10,485.74x = 137,091,903.91
  5. Step 5: Solve for x
    x = 137,091,903.91/10,485.74
  6. Step 6: Final answer
    x = 13,074.13

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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.