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Finding the Fourth Proportional to 12,701.93, 17,528.70 and 7,112.93

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Solution

The fourth proportional to 12,701.93, 17,528.70 and 7,112.93 is: 9,815.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,701.93 : 17,528.70 = 7,112.93 : x
  2. Step 2: Convert to fraction form
    12,701.93/17,528.70 = 7,112.93/x
  3. Step 3: Cross multiply
    12,701.93x = 17,528.70 × 7,112.93
  4. Step 4: Simplify right side
    12,701.93x = 124,680,416.09
  5. Step 5: Solve for x
    x = 124,680,416.09/12,701.93
  6. Step 6: Final answer
    x = 9,815.86

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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.