Home / 12,416.86-17,130.42-7,108.84

Finding the Fourth Proportional to 12,416.86, 17,130.42 and 7,108.84

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Solution

The fourth proportional to 12,416.86, 17,130.42 and 7,108.84 is: 9,807.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,416.86 : 17,130.42 = 7,108.84 : x
  2. Step 2: Convert to fraction form
    12,416.86/17,130.42 = 7,108.84/x
  3. Step 3: Cross multiply
    12,416.86x = 17,130.42 × 7,108.84
  4. Step 4: Simplify right side
    12,416.86x = 121,777,414.91
  5. Step 5: Solve for x
    x = 121,777,414.91/12,416.86
  6. Step 6: Final answer
    x = 9,807.42

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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.