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Finding the Fourth Proportional to 18,113.98, 27,130.83 and 13,923.13

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Solution

The fourth proportional to 18,113.98, 27,130.83 and 13,923.13 is: 20,853.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.98 : 27,130.83 = 13,923.13 : x
  2. Step 2: Convert to fraction form
    18,113.98/27,130.83 = 13,923.13/x
  3. Step 3: Cross multiply
    18,113.98x = 27,130.83 × 13,923.13
  4. Step 4: Simplify right side
    18,113.98x = 377,746,073.10
  5. Step 5: Solve for x
    x = 377,746,073.10/18,113.98
  6. Step 6: Final answer
    x = 20,853.84

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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.