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Finding the Fourth Proportional to 13,425.88, 18,527.96 and 7,458.10

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Solution

The fourth proportional to 13,425.88, 18,527.96 and 7,458.10 is: 10,292.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.88 : 18,527.96 = 7,458.10 : x
  2. Step 2: Convert to fraction form
    13,425.88/18,527.96 = 7,458.10/x
  3. Step 3: Cross multiply
    13,425.88x = 18,527.96 × 7,458.10
  4. Step 4: Simplify right side
    13,425.88x = 138,183,378.48
  5. Step 5: Solve for x
    x = 138,183,378.48/13,425.88
  6. Step 6: Final answer
    x = 10,292.31

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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.