Home / 20,272.86-30,408.93-6,421.50

Finding the Fourth Proportional to 20,272.86, 30,408.93 and 6,421.50

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Solution

The fourth proportional to 20,272.86, 30,408.93 and 6,421.50 is: 9,632.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.86 : 30,408.93 = 6,421.50 : x
  2. Step 2: Convert to fraction form
    20,272.86/30,408.93 = 6,421.50/x
  3. Step 3: Cross multiply
    20,272.86x = 30,408.93 × 6,421.50
  4. Step 4: Simplify right side
    20,272.86x = 195,270,944.00
  5. Step 5: Solve for x
    x = 195,270,944.00/20,272.86
  6. Step 6: Final answer
    x = 9,632.14

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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.