Home / 14,912.79-20,579.61-8,539.39

Finding the Fourth Proportional to 14,912.79, 20,579.61 and 8,539.39

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Solution

The fourth proportional to 14,912.79, 20,579.61 and 8,539.39 is: 11,784.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,912.79 : 20,579.61 = 8,539.39 : x
  2. Step 2: Convert to fraction form
    14,912.79/20,579.61 = 8,539.39/x
  3. Step 3: Cross multiply
    14,912.79x = 20,579.61 × 8,539.39
  4. Step 4: Simplify right side
    14,912.79x = 175,737,315.84
  5. Step 5: Solve for x
    x = 175,737,315.84/14,912.79
  6. Step 6: Final answer
    x = 11,784.34

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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.