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Finding the Fourth Proportional to 13,524.04, 18,661 and 7,555.40

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Solution

The fourth proportional to 13,524.04, 18,661 and 7,555.40 is: 10,425.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,524.04 : 18,661 = 7,555.40 : x
  2. Step 2: Convert to fraction form
    13,524.04/18,661 = 7,555.40/x
  3. Step 3: Cross multiply
    13,524.04x = 18,661 × 7,555.40
  4. Step 4: Simplify right side
    13,524.04x = 140,991,319.40
  5. Step 5: Solve for x
    x = 140,991,319.40/13,524.04
  6. Step 6: Final answer
    x = 10,425.24

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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.