Home / 18,820.26-28,235.13-13,284.42

Finding the Fourth Proportional to 18,820.26, 28,235.13 and 13,284.42

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Solution

The fourth proportional to 18,820.26, 28,235.13 and 13,284.42 is: 19,929.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.26 : 28,235.13 = 13,284.42 : x
  2. Step 2: Convert to fraction form
    18,820.26/28,235.13 = 13,284.42/x
  3. Step 3: Cross multiply
    18,820.26x = 28,235.13 × 13,284.42
  4. Step 4: Simplify right side
    18,820.26x = 375,087,325.67
  5. Step 5: Solve for x
    x = 375,087,325.67/18,820.26
  6. Step 6: Final answer
    x = 19,929.98

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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.