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Finding the Fourth Proportional to 18,017.80, 27,002.40 and 12,077.80

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Solution

The fourth proportional to 18,017.80, 27,002.40 and 12,077.80 is: 18,100.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,017.80 : 27,002.40 = 12,077.80 : x
  2. Step 2: Convert to fraction form
    18,017.80/27,002.40 = 12,077.80/x
  3. Step 3: Cross multiply
    18,017.80x = 27,002.40 × 12,077.80
  4. Step 4: Simplify right side
    18,017.80x = 326,129,586.72
  5. Step 5: Solve for x
    x = 326,129,586.72/18,017.80
  6. Step 6: Final answer
    x = 18,100.41

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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.