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Finding the Fourth Proportional to 13,425.62, 18,525.11 and 7,457.13

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Solution

The fourth proportional to 13,425.62, 18,525.11 and 7,457.13 is: 10,289.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.62 : 18,525.11 = 7,457.13 : x
  2. Step 2: Convert to fraction form
    13,425.62/18,525.11 = 7,457.13/x
  3. Step 3: Cross multiply
    13,425.62x = 18,525.11 × 7,457.13
  4. Step 4: Simplify right side
    13,425.62x = 138,144,116.25
  5. Step 5: Solve for x
    x = 138,144,116.25/13,425.62
  6. Step 6: Final answer
    x = 10,289.59

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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.