Home / 20,360.98-30,505.20-12,459.62

Finding the Fourth Proportional to 20,360.98, 30,505.20 and 12,459.62

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Solution

The fourth proportional to 20,360.98, 30,505.20 and 12,459.62 is: 18,667.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.98 : 30,505.20 = 12,459.62 : x
  2. Step 2: Convert to fraction form
    20,360.98/30,505.20 = 12,459.62/x
  3. Step 3: Cross multiply
    20,360.98x = 30,505.20 × 12,459.62
  4. Step 4: Simplify right side
    20,360.98x = 380,083,200.02
  5. Step 5: Solve for x
    x = 380,083,200.02/20,360.98
  6. Step 6: Final answer
    x = 18,667.24

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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.