Home / 14,688.24-20,269.68-8,400.72

Finding the Fourth Proportional to 14,688.24, 20,269.68 and 8,400.72

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Solution

The fourth proportional to 14,688.24, 20,269.68 and 8,400.72 is: 11,592.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.24 : 20,269.68 = 8,400.72 : x
  2. Step 2: Convert to fraction form
    14,688.24/20,269.68 = 8,400.72/x
  3. Step 3: Cross multiply
    14,688.24x = 20,269.68 × 8,400.72
  4. Step 4: Simplify right side
    14,688.24x = 170,279,906.17
  5. Step 5: Solve for x
    x = 170,279,906.17/14,688.24
  6. Step 6: Final answer
    x = 11,592.94

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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.