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Finding the Fourth Proportional to 18,384.80, 27,579.77 and 7,292.58

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Solution

The fourth proportional to 18,384.80, 27,579.77 and 7,292.58 is: 10,939.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,384.80 : 27,579.77 = 7,292.58 : x
  2. Step 2: Convert to fraction form
    18,384.80/27,579.77 = 7,292.58/x
  3. Step 3: Cross multiply
    18,384.80x = 27,579.77 × 7,292.58
  4. Step 4: Simplify right side
    18,384.80x = 201,127,642.64
  5. Step 5: Solve for x
    x = 201,127,642.64/18,384.80
  6. Step 6: Final answer
    x = 10,939.89

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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.