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Finding the Fourth Proportional to 18,148.80, 27,224.28 and 7,051.80

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Solution

The fourth proportional to 18,148.80, 27,224.28 and 7,051.80 is: 10,578.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,148.80 : 27,224.28 = 7,051.80 : x
  2. Step 2: Convert to fraction form
    18,148.80/27,224.28 = 7,051.80/x
  3. Step 3: Cross multiply
    18,148.80x = 27,224.28 × 7,051.80
  4. Step 4: Simplify right side
    18,148.80x = 191,980,177.70
  5. Step 5: Solve for x
    x = 191,980,177.70/18,148.80
  6. Step 6: Final answer
    x = 10,578.12

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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.