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Finding the Fourth Proportional to 11,245.89, 16,870.89 and 4,672.59

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Solution

The fourth proportional to 11,245.89, 16,870.89 and 4,672.59 is: 7,009.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,245.89 : 16,870.89 = 4,672.59 : x
  2. Step 2: Convert to fraction form
    11,245.89/16,870.89 = 4,672.59/x
  3. Step 3: Cross multiply
    11,245.89x = 16,870.89 × 4,672.59
  4. Step 4: Simplify right side
    11,245.89x = 78,830,751.91
  5. Step 5: Solve for x
    x = 78,830,751.91/11,245.89
  6. Step 6: Final answer
    x = 7,009.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.