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Finding the Fourth Proportional to 14,807.33, 20,420.87 and 12,285.44

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Solution

The fourth proportional to 14,807.33, 20,420.87 and 12,285.44 is: 16,942.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,807.33 : 20,420.87 = 12,285.44 : x
  2. Step 2: Convert to fraction form
    14,807.33/20,420.87 = 12,285.44/x
  3. Step 3: Cross multiply
    14,807.33x = 20,420.87 × 12,285.44
  4. Step 4: Simplify right side
    14,807.33x = 250,879,301.74
  5. Step 5: Solve for x
    x = 250,879,301.74/14,807.33
  6. Step 6: Final answer
    x = 16,942.92

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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.