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Finding the Fourth Proportional to 13,012.87, 17,957.76 and 7,044.53

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Solution

The fourth proportional to 13,012.87, 17,957.76 and 7,044.53 is: 9,721.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.87 : 17,957.76 = 7,044.53 : x
  2. Step 2: Convert to fraction form
    13,012.87/17,957.76 = 7,044.53/x
  3. Step 3: Cross multiply
    13,012.87x = 17,957.76 × 7,044.53
  4. Step 4: Simplify right side
    13,012.87x = 126,503,997.53
  5. Step 5: Solve for x
    x = 126,503,997.53/13,012.87
  6. Step 6: Final answer
    x = 9,721.45

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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.