Home / 12,400.86-17,108.34-7,092.84

Finding the Fourth Proportional to 12,400.86, 17,108.34 and 7,092.84

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Solution

The fourth proportional to 12,400.86, 17,108.34 and 7,092.84 is: 9,785.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.86 : 17,108.34 = 7,092.84 : x
  2. Step 2: Convert to fraction form
    12,400.86/17,108.34 = 7,092.84/x
  3. Step 3: Cross multiply
    12,400.86x = 17,108.34 × 7,092.84
  4. Step 4: Simplify right side
    12,400.86x = 121,346,718.29
  5. Step 5: Solve for x
    x = 121,346,718.29/12,400.86
  6. Step 6: Final answer
    x = 9,785.35

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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.