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Finding the Fourth Proportional to 12,907.15, 17,793.88 and 8,650.80

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Solution

The fourth proportional to 12,907.15, 17,793.88 and 8,650.80 is: 11,926.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.15 : 17,793.88 = 8,650.80 : x
  2. Step 2: Convert to fraction form
    12,907.15/17,793.88 = 8,650.80/x
  3. Step 3: Cross multiply
    12,907.15x = 17,793.88 × 8,650.80
  4. Step 4: Simplify right side
    12,907.15x = 153,931,275.48
  5. Step 5: Solve for x
    x = 153,931,275.48/12,907.15
  6. Step 6: Final answer
    x = 11,926.05

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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.