Home / 18,519.12-27,778.68-18,298.80

Finding the Fourth Proportional to 18,519.12, 27,778.68 and 18,298.80

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Solution

The fourth proportional to 18,519.12, 27,778.68 and 18,298.80 is: 27,448.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.12 : 27,778.68 = 18,298.80 : x
  2. Step 2: Convert to fraction form
    18,519.12/27,778.68 = 18,298.80/x
  3. Step 3: Cross multiply
    18,519.12x = 27,778.68 × 18,298.80
  4. Step 4: Simplify right side
    18,519.12x = 508,316,509.58
  5. Step 5: Solve for x
    x = 508,316,509.58/18,519.12
  6. Step 6: Final answer
    x = 27,448.20

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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.