Home / 40,956.09-61,434.09-12,878.61

Finding the Fourth Proportional to 40,956.09, 61,434.09 and 12,878.61

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Solution

The fourth proportional to 40,956.09, 61,434.09 and 12,878.61 is: 19,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,956.09 : 61,434.09 = 12,878.61 : x
  2. Step 2: Convert to fraction form
    40,956.09/61,434.09 = 12,878.61/x
  3. Step 3: Cross multiply
    40,956.09x = 61,434.09 × 12,878.61
  4. Step 4: Simplify right side
    40,956.09x = 791,185,685.81
  5. Step 5: Solve for x
    x = 791,185,685.81/40,956.09
  6. Step 6: Final answer
    x = 19,317.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.