Home / 40,770.30-61,147.71-12,690.70

Finding the Fourth Proportional to 40,770.30, 61,147.71 and 12,690.70

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Solution

The fourth proportional to 40,770.30, 61,147.71 and 12,690.70 is: 19,033.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,770.30 : 61,147.71 = 12,690.70 : x
  2. Step 2: Convert to fraction form
    40,770.30/61,147.71 = 12,690.70/x
  3. Step 3: Cross multiply
    40,770.30x = 61,147.71 × 12,690.70
  4. Step 4: Simplify right side
    40,770.30x = 776,007,243.30
  5. Step 5: Solve for x
    x = 776,007,243.30/40,770.30
  6. Step 6: Final answer
    x = 19,033.64

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1.5x scale

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.