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Finding the Fourth Proportional to 18,983.14, 28,279.82 and 18,130.22

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Solution

The fourth proportional to 18,983.14, 28,279.82 and 18,130.22 is: 27,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,983.14 : 28,279.82 = 18,130.22 : x
  2. Step 2: Convert to fraction form
    18,983.14/28,279.82 = 18,130.22/x
  3. Step 3: Cross multiply
    18,983.14x = 28,279.82 × 18,130.22
  4. Step 4: Simplify right side
    18,983.14x = 512,719,358.16
  5. Step 5: Solve for x
    x = 512,719,358.16/18,983.14
  6. Step 6: Final answer
    x = 27,009.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.