Home / 14,724.89-20,320.89-8,438.48

Finding the Fourth Proportional to 14,724.89, 20,320.89 and 8,438.48

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Solution

The fourth proportional to 14,724.89, 20,320.89 and 8,438.48 is: 11,645.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,724.89 : 20,320.89 = 8,438.48 : x
  2. Step 2: Convert to fraction form
    14,724.89/20,320.89 = 8,438.48/x
  3. Step 3: Cross multiply
    14,724.89x = 20,320.89 × 8,438.48
  4. Step 4: Simplify right side
    14,724.89x = 171,477,423.85
  5. Step 5: Solve for x
    x = 171,477,423.85/14,724.89
  6. Step 6: Final answer
    x = 11,645.41

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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.