Home / 11,859.12-16,363.26-7,143.66

Finding the Fourth Proportional to 11,859.12, 16,363.26 and 7,143.66

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Solution

The fourth proportional to 11,859.12, 16,363.26 and 7,143.66 is: 9,856.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,859.12 : 16,363.26 = 7,143.66 : x
  2. Step 2: Convert to fraction form
    11,859.12/16,363.26 = 7,143.66/x
  3. Step 3: Cross multiply
    11,859.12x = 16,363.26 × 7,143.66
  4. Step 4: Simplify right side
    11,859.12x = 116,893,565.93
  5. Step 5: Solve for x
    x = 116,893,565.93/11,859.12
  6. Step 6: Final answer
    x = 9,856.85

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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.