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Finding the Fourth Proportional to 18,554.64, 27,838.80 and 8,697.12

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Solution

The fourth proportional to 18,554.64, 27,838.80 and 8,697.12 is: 13,048.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,554.64 : 27,838.80 = 8,697.12 : x
  2. Step 2: Convert to fraction form
    18,554.64/27,838.80 = 8,697.12/x
  3. Step 3: Cross multiply
    18,554.64x = 27,838.80 × 8,697.12
  4. Step 4: Simplify right side
    18,554.64x = 242,117,384.26
  5. Step 5: Solve for x
    x = 242,117,384.26/18,554.64
  6. Step 6: Final answer
    x = 13,048.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.