Home / 28,077.21-38,745.33-15,330.12

Finding the Fourth Proportional to 28,077.21, 38,745.33 and 15,330.12

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Solution

The fourth proportional to 28,077.21, 38,745.33 and 15,330.12 is: 21,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,077.21 : 38,745.33 = 15,330.12 : x
  2. Step 2: Convert to fraction form
    28,077.21/38,745.33 = 15,330.12/x
  3. Step 3: Cross multiply
    28,077.21x = 38,745.33 × 15,330.12
  4. Step 4: Simplify right side
    28,077.21x = 593,970,558.34
  5. Step 5: Solve for x
    x = 593,970,558.34/28,077.21
  6. Step 6: Final answer
    x = 21,154.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.