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Finding the Fourth Proportional to 13,010.63, 17,957.09 and 7,421.63

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Solution

The fourth proportional to 13,010.63, 17,957.09 and 7,421.63 is: 10,243.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,010.63 : 17,957.09 = 7,421.63 : x
  2. Step 2: Convert to fraction form
    13,010.63/17,957.09 = 7,421.63/x
  3. Step 3: Cross multiply
    13,010.63x = 17,957.09 × 7,421.63
  4. Step 4: Simplify right side
    13,010.63x = 133,270,806.63
  5. Step 5: Solve for x
    x = 133,270,806.63/13,010.63
  6. Step 6: Final answer
    x = 10,243.23

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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.