Home / 42,463.05-63,694.80-12,880.91

Finding the Fourth Proportional to 42,463.05, 63,694.80 and 12,880.91

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Solution

The fourth proportional to 42,463.05, 63,694.80 and 12,880.91 is: 19,321.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,463.05 : 63,694.80 = 12,880.91 : x
  2. Step 2: Convert to fraction form
    42,463.05/63,694.80 = 12,880.91/x
  3. Step 3: Cross multiply
    42,463.05x = 63,694.80 × 12,880.91
  4. Step 4: Simplify right side
    42,463.05x = 820,446,986.27
  5. Step 5: Solve for x
    x = 820,446,986.27/42,463.05
  6. Step 6: Final answer
    x = 19,321.44

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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.