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Finding the Fourth Proportional to 20,441.60, 30,655.20 and 9,353.60

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Solution

The fourth proportional to 20,441.60, 30,655.20 and 9,353.60 is: 14,027.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,441.60 : 30,655.20 = 9,353.60 : x
  2. Step 2: Convert to fraction form
    20,441.60/30,655.20 = 9,353.60/x
  3. Step 3: Cross multiply
    20,441.60x = 30,655.20 × 9,353.60
  4. Step 4: Simplify right side
    20,441.60x = 286,736,478.72
  5. Step 5: Solve for x
    x = 286,736,478.72/20,441.60
  6. Step 6: Final answer
    x = 14,027.11

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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.