Home / 14,979.40-20,662.40-8,925.60

Finding the Fourth Proportional to 14,979.40, 20,662.40 and 8,925.60

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Solution

The fourth proportional to 14,979.40, 20,662.40 and 8,925.60 is: 12,311.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,979.40 : 20,662.40 = 8,925.60 : x
  2. Step 2: Convert to fraction form
    14,979.40/20,662.40 = 8,925.60/x
  3. Step 3: Cross multiply
    14,979.40x = 20,662.40 × 8,925.60
  4. Step 4: Simplify right side
    14,979.40x = 184,424,317.44
  5. Step 5: Solve for x
    x = 184,424,317.44/14,979.40
  6. Step 6: Final answer
    x = 12,311.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.