Home / 14,724.48-20,320.31-8,438.07

Finding the Fourth Proportional to 14,724.48, 20,320.31 and 8,438.07

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Solution

The fourth proportional to 14,724.48, 20,320.31 and 8,438.07 is: 11,644.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,724.48 : 20,320.31 = 8,438.07 : x
  2. Step 2: Convert to fraction form
    14,724.48/20,320.31 = 8,438.07/x
  3. Step 3: Cross multiply
    14,724.48x = 20,320.31 × 8,438.07
  4. Step 4: Simplify right side
    14,724.48x = 171,464,198.20
  5. Step 5: Solve for x
    x = 171,464,198.20/14,724.48
  6. Step 6: Final answer
    x = 11,644.84

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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.