Home / 18,519.60-27,780.84-5,372.16

Finding the Fourth Proportional to 18,519.60, 27,780.84 and 5,372.16

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Solution

The fourth proportional to 18,519.60, 27,780.84 and 5,372.16 is: 8,058.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.60 : 27,780.84 = 5,372.16 : x
  2. Step 2: Convert to fraction form
    18,519.60/27,780.84 = 5,372.16/x
  3. Step 3: Cross multiply
    18,519.60x = 27,780.84 × 5,372.16
  4. Step 4: Simplify right side
    18,519.60x = 149,243,117.41
  5. Step 5: Solve for x
    x = 149,243,117.41/18,519.60
  6. Step 6: Final answer
    x = 8,058.66

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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.