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Finding the Fourth Proportional to 12,706.48, 17,534.88 and 7,328.89

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Solution

The fourth proportional to 12,706.48, 17,534.88 and 7,328.89 is: 10,113.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,706.48 : 17,534.88 = 7,328.89 : x
  2. Step 2: Convert to fraction form
    12,706.48/17,534.88 = 7,328.89/x
  3. Step 3: Cross multiply
    12,706.48x = 17,534.88 × 7,328.89
  4. Step 4: Simplify right side
    12,706.48x = 128,511,206.68
  5. Step 5: Solve for x
    x = 128,511,206.68/12,706.48
  6. Step 6: Final answer
    x = 10,113.83

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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.