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Finding the Fourth Proportional to 12,475.89, 17,216.28 and 6,886.89

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Solution

The fourth proportional to 12,475.89, 17,216.28 and 6,886.89 is: 9,503.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.89 : 17,216.28 = 6,886.89 : x
  2. Step 2: Convert to fraction form
    12,475.89/17,216.28 = 6,886.89/x
  3. Step 3: Cross multiply
    12,475.89x = 17,216.28 × 6,886.89
  4. Step 4: Simplify right side
    12,475.89x = 118,566,626.57
  5. Step 5: Solve for x
    x = 118,566,626.57/12,475.89
  6. Step 6: Final answer
    x = 9,503.66

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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.