Home / 12,359.66-17,038.50-8,160.62

Finding the Fourth Proportional to 12,359.66, 17,038.50 and 8,160.62

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Solution

The fourth proportional to 12,359.66, 17,038.50 and 8,160.62 is: 11,249.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.66 : 17,038.50 = 8,160.62 : x
  2. Step 2: Convert to fraction form
    12,359.66/17,038.50 = 8,160.62/x
  3. Step 3: Cross multiply
    12,359.66x = 17,038.50 × 8,160.62
  4. Step 4: Simplify right side
    12,359.66x = 139,044,723.87
  5. Step 5: Solve for x
    x = 139,044,723.87/12,359.66
  6. Step 6: Final answer
    x = 11,249.88

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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.