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Finding the Fourth Proportional to 12,707.53, 17,538.84 and 7,333.45

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Solution

The fourth proportional to 12,707.53, 17,538.84 and 7,333.45 is: 10,121.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,707.53 : 17,538.84 = 7,333.45 : x
  2. Step 2: Convert to fraction form
    12,707.53/17,538.84 = 7,333.45/x
  3. Step 3: Cross multiply
    12,707.53x = 17,538.84 × 7,333.45
  4. Step 4: Simplify right side
    12,707.53x = 128,620,162.35
  5. Step 5: Solve for x
    x = 128,620,162.35/12,707.53
  6. Step 6: Final answer
    x = 10,121.57

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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.