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Finding the Fourth Proportional to 18,000.40, 27,000.44 and 4,851.68

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Solution

The fourth proportional to 18,000.40, 27,000.44 and 4,851.68 is: 7,277.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,000.40 : 27,000.44 = 4,851.68 : x
  2. Step 2: Convert to fraction form
    18,000.40/27,000.44 = 4,851.68/x
  3. Step 3: Cross multiply
    18,000.40x = 27,000.44 × 4,851.68
  4. Step 4: Simplify right side
    18,000.40x = 130,997,494.74
  5. Step 5: Solve for x
    x = 130,997,494.74/18,000.40
  6. Step 6: Final answer
    x = 7,277.48

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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.