Home / 18,814.24-28,221.36-12,953.20

Finding the Fourth Proportional to 18,814.24, 28,221.36 and 12,953.20

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Solution

The fourth proportional to 18,814.24, 28,221.36 and 12,953.20 is: 19,429.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.24 : 28,221.36 = 12,953.20 : x
  2. Step 2: Convert to fraction form
    18,814.24/28,221.36 = 12,953.20/x
  3. Step 3: Cross multiply
    18,814.24x = 28,221.36 × 12,953.20
  4. Step 4: Simplify right side
    18,814.24x = 365,556,920.35
  5. Step 5: Solve for x
    x = 365,556,920.35/18,814.24
  6. Step 6: Final answer
    x = 19,429.80

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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.