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Finding the Fourth Proportional to 18,291.80, 27,437.70 and 4,440.80

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Solution

The fourth proportional to 18,291.80, 27,437.70 and 4,440.80 is: 6,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.80 : 27,437.70 = 4,440.80 : x
  2. Step 2: Convert to fraction form
    18,291.80/27,437.70 = 4,440.80/x
  3. Step 3: Cross multiply
    18,291.80x = 27,437.70 × 4,440.80
  4. Step 4: Simplify right side
    18,291.80x = 121,845,338.16
  5. Step 5: Solve for x
    x = 121,845,338.16/18,291.80
  6. Step 6: Final answer
    x = 6,661.20

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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.