Home / 14,688.22-20,260.79-8,715.90

Finding the Fourth Proportional to 14,688.22, 20,260.79 and 8,715.90

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Solution

The fourth proportional to 14,688.22, 20,260.79 and 8,715.90 is: 12,022.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.22 : 20,260.79 = 8,715.90 : x
  2. Step 2: Convert to fraction form
    14,688.22/20,260.79 = 8,715.90/x
  3. Step 3: Cross multiply
    14,688.22x = 20,260.79 × 8,715.90
  4. Step 4: Simplify right side
    14,688.22x = 176,591,019.56
  5. Step 5: Solve for x
    x = 176,591,019.56/14,688.22
  6. Step 6: Final answer
    x = 12,022.63

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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.