Home / 20,401.30-30,543.55-12,557.30

Finding the Fourth Proportional to 20,401.30, 30,543.55 and 12,557.30

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Solution

The fourth proportional to 20,401.30, 30,543.55 and 12,557.30 is: 18,800.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.30 : 30,543.55 = 12,557.30 : x
  2. Step 2: Convert to fraction form
    20,401.30/30,543.55 = 12,557.30/x
  3. Step 3: Cross multiply
    20,401.30x = 30,543.55 × 12,557.30
  4. Step 4: Simplify right side
    20,401.30x = 383,544,520.42
  5. Step 5: Solve for x
    x = 383,544,520.42/20,401.30
  6. Step 6: Final answer
    x = 18,800.00

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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.