Home / 40,680.16-61,022.40-12,976

Finding the Fourth Proportional to 40,680.16, 61,022.40 and 12,976

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Solution

The fourth proportional to 40,680.16, 61,022.40 and 12,976 is: 19,464.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,680.16 : 61,022.40 = 12,976 : x
  2. Step 2: Convert to fraction form
    40,680.16/61,022.40 = 12,976/x
  3. Step 3: Cross multiply
    40,680.16x = 61,022.40 × 12,976
  4. Step 4: Simplify right side
    40,680.16x = 791,826,662.40
  5. Step 5: Solve for x
    x = 791,826,662.40/40,680.16
  6. Step 6: Final answer
    x = 19,464.69

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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.