Home / 12,891.53-19,337.31-3,531.63

Finding the Fourth Proportional to 12,891.53, 19,337.31 and 3,531.63

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Solution

The fourth proportional to 12,891.53, 19,337.31 and 3,531.63 is: 5,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891.53 : 19,337.31 = 3,531.63 : x
  2. Step 2: Convert to fraction form
    12,891.53/19,337.31 = 3,531.63/x
  3. Step 3: Cross multiply
    12,891.53x = 19,337.31 × 3,531.63
  4. Step 4: Simplify right side
    12,891.53x = 68,292,252.18
  5. Step 5: Solve for x
    x = 68,292,252.18/12,891.53
  6. Step 6: Final answer
    x = 5,297.45

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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.