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Finding the Fourth Proportional to 18,063.40, 27,095.10 and 13,689.40

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Solution

The fourth proportional to 18,063.40, 27,095.10 and 13,689.40 is: 20,534.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,063.40 : 27,095.10 = 13,689.40 : x
  2. Step 2: Convert to fraction form
    18,063.40/27,095.10 = 13,689.40/x
  3. Step 3: Cross multiply
    18,063.40x = 27,095.10 × 13,689.40
  4. Step 4: Simplify right side
    18,063.40x = 370,915,661.94
  5. Step 5: Solve for x
    x = 370,915,661.94/18,063.40
  6. Step 6: Final answer
    x = 20,534.10

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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.