Home / 14,688.43-20,270.05-8,400.80

Finding the Fourth Proportional to 14,688.43, 20,270.05 and 8,400.80

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Solution

The fourth proportional to 14,688.43, 20,270.05 and 8,400.80 is: 11,593.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.43 : 20,270.05 = 8,400.80 : x
  2. Step 2: Convert to fraction form
    14,688.43/20,270.05 = 8,400.80/x
  3. Step 3: Cross multiply
    14,688.43x = 20,270.05 × 8,400.80
  4. Step 4: Simplify right side
    14,688.43x = 170,284,665.71
  5. Step 5: Solve for x
    x = 170,284,665.71/14,688.43
  6. Step 6: Final answer
    x = 11,593.12

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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.