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Finding the Fourth Proportional to 18,320.10, 27,129.30 and 18,320.10

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Solution

The fourth proportional to 18,320.10, 27,129.30 and 18,320.10 is: 27,129.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.10 : 27,129.30 = 18,320.10 : x
  2. Step 2: Convert to fraction form
    18,320.10/27,129.30 = 18,320.10/x
  3. Step 3: Cross multiply
    18,320.10x = 27,129.30 × 18,320.10
  4. Step 4: Simplify right side
    18,320.10x = 497,011,488.93
  5. Step 5: Solve for x
    x = 497,011,488.93/18,320.10
  6. Step 6: Final answer
    x = 27,129.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.