Home / 10,711.79-16,039.74-8,620.37

Finding the Fourth Proportional to 10,711.79, 16,039.74 and 8,620.37

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Solution

The fourth proportional to 10,711.79, 16,039.74 and 8,620.37 is: 12,908.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,711.79 : 16,039.74 = 8,620.37 : x
  2. Step 2: Convert to fraction form
    10,711.79/16,039.74 = 8,620.37/x
  3. Step 3: Cross multiply
    10,711.79x = 16,039.74 × 8,620.37
  4. Step 4: Simplify right side
    10,711.79x = 138,268,493.50
  5. Step 5: Solve for x
    x = 138,268,493.50/10,711.79
  6. Step 6: Final answer
    x = 12,908.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.