Home / 12,689.49-19,032.86-3,330.44

Finding the Fourth Proportional to 12,689.49, 19,032.86 and 3,330.44

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Solution

The fourth proportional to 12,689.49, 19,032.86 and 3,330.44 is: 4,995.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689.49 : 19,032.86 = 3,330.44 : x
  2. Step 2: Convert to fraction form
    12,689.49/19,032.86 = 3,330.44/x
  3. Step 3: Cross multiply
    12,689.49x = 19,032.86 × 3,330.44
  4. Step 4: Simplify right side
    12,689.49x = 63,387,686.44
  5. Step 5: Solve for x
    x = 63,387,686.44/12,689.49
  6. Step 6: Final answer
    x = 4,995.29

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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.