Home / 15,039.50-20,756.70-8,664.84

Finding the Fourth Proportional to 15,039.50, 20,756.70 and 8,664.84

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Solution

The fourth proportional to 15,039.50, 20,756.70 and 8,664.84 is: 11,958.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,039.50 : 20,756.70 = 8,664.84 : x
  2. Step 2: Convert to fraction form
    15,039.50/20,756.70 = 8,664.84/x
  3. Step 3: Cross multiply
    15,039.50x = 20,756.70 × 8,664.84
  4. Step 4: Simplify right side
    15,039.50x = 179,853,484.43
  5. Step 5: Solve for x
    x = 179,853,484.43/15,039.50
  6. Step 6: Final answer
    x = 11,958.74

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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.