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Finding the Fourth Proportional to 12,732.56, 17,570.88 and 7,143.56

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Solution

The fourth proportional to 12,732.56, 17,570.88 and 7,143.56 is: 9,858.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,732.56 : 17,570.88 = 7,143.56 : x
  2. Step 2: Convert to fraction form
    12,732.56/17,570.88 = 7,143.56/x
  3. Step 3: Cross multiply
    12,732.56x = 17,570.88 × 7,143.56
  4. Step 4: Simplify right side
    12,732.56x = 125,518,635.53
  5. Step 5: Solve for x
    x = 125,518,635.53/12,732.56
  6. Step 6: Final answer
    x = 9,858.08

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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.