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Finding the Fourth Proportional to 13,425.71, 18,521.06 and 9,449.03

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Solution

The fourth proportional to 13,425.71, 18,521.06 and 9,449.03 is: 13,035.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.71 : 18,521.06 = 9,449.03 : x
  2. Step 2: Convert to fraction form
    13,425.71/18,521.06 = 9,449.03/x
  3. Step 3: Cross multiply
    13,425.71x = 18,521.06 × 9,449.03
  4. Step 4: Simplify right side
    13,425.71x = 175,006,004.33
  5. Step 5: Solve for x
    x = 175,006,004.33/13,425.71
  6. Step 6: Final answer
    x = 13,035.14

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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.