Home / 40,919.71-61,382.16-12,840.87

Finding the Fourth Proportional to 40,919.71, 61,382.16 and 12,840.87

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Solution

The fourth proportional to 40,919.71, 61,382.16 and 12,840.87 is: 19,262.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,919.71 : 61,382.16 = 12,840.87 : x
  2. Step 2: Convert to fraction form
    40,919.71/61,382.16 = 12,840.87/x
  3. Step 3: Cross multiply
    40,919.71x = 61,382.16 × 12,840.87
  4. Step 4: Simplify right side
    40,919.71x = 788,200,346.27
  5. Step 5: Solve for x
    x = 788,200,346.27/40,919.71
  6. Step 6: Final answer
    x = 19,262.12

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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.