Home / 14,724.90-20,320.25-8,351.42

Finding the Fourth Proportional to 14,724.90, 20,320.25 and 8,351.42

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Solution

The fourth proportional to 14,724.90, 20,320.25 and 8,351.42 is: 11,524.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,724.90 : 20,320.25 = 8,351.42 : x
  2. Step 2: Convert to fraction form
    14,724.90/20,320.25 = 8,351.42/x
  3. Step 3: Cross multiply
    14,724.90x = 20,320.25 × 8,351.42
  4. Step 4: Simplify right side
    14,724.90x = 169,702,798.90
  5. Step 5: Solve for x
    x = 169,702,798.90/14,724.90
  6. Step 6: Final answer
    x = 11,524.89

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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.