Home / 20,411.53-30,603.96-8,572.86

Finding the Fourth Proportional to 20,411.53, 30,603.96 and 8,572.86

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Solution

The fourth proportional to 20,411.53, 30,603.96 and 8,572.86 is: 12,853.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.53 : 30,603.96 = 8,572.86 : x
  2. Step 2: Convert to fraction form
    20,411.53/30,603.96 = 8,572.86/x
  3. Step 3: Cross multiply
    20,411.53x = 30,603.96 × 8,572.86
  4. Step 4: Simplify right side
    20,411.53x = 262,363,464.53
  5. Step 5: Solve for x
    x = 262,363,464.53/20,411.53
  6. Step 6: Final answer
    x = 12,853.69

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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.