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Finding the Fourth Proportional to 13,560, 18,707.58 and 8,522.16

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Solution

The fourth proportional to 13,560, 18,707.58 and 8,522.16 is: 11,757.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560 : 18,707.58 = 8,522.16 : x
  2. Step 2: Convert to fraction form
    13,560/18,707.58 = 8,522.16/x
  3. Step 3: Cross multiply
    13,560x = 18,707.58 × 8,522.16
  4. Step 4: Simplify right side
    13,560x = 159,428,989.97
  5. Step 5: Solve for x
    x = 159,428,989.97/13,560
  6. Step 6: Final answer
    x = 11,757.30

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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.