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Finding the Fourth Proportional to 20,439.60, 30,594.60 and 14,607.60

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Solution

The fourth proportional to 20,439.60, 30,594.60 and 14,607.60 is: 21,865.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.60 : 30,594.60 = 14,607.60 : x
  2. Step 2: Convert to fraction form
    20,439.60/30,594.60 = 14,607.60/x
  3. Step 3: Cross multiply
    20,439.60x = 30,594.60 × 14,607.60
  4. Step 4: Simplify right side
    20,439.60x = 446,913,678.96
  5. Step 5: Solve for x
    x = 446,913,678.96/20,439.60
  6. Step 6: Final answer
    x = 21,865.09

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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.