Home / 20,411.28-30,625.08-9,323.20

Finding the Fourth Proportional to 20,411.28, 30,625.08 and 9,323.20

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Solution

The fourth proportional to 20,411.28, 30,625.08 and 9,323.20 is: 13,988.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.28 : 30,625.08 = 9,323.20 : x
  2. Step 2: Convert to fraction form
    20,411.28/30,625.08 = 9,323.20/x
  3. Step 3: Cross multiply
    20,411.28x = 30,625.08 × 9,323.20
  4. Step 4: Simplify right side
    20,411.28x = 285,523,745.86
  5. Step 5: Solve for x
    x = 285,523,745.86/20,411.28
  6. Step 6: Final answer
    x = 13,988.53

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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.