Home / 12,688.49-19,032.29-3,328.43

Finding the Fourth Proportional to 12,688.49, 19,032.29 and 3,328.43

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Solution

The fourth proportional to 12,688.49, 19,032.29 and 3,328.43 is: 4,992.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.49 : 19,032.29 = 3,328.43 : x
  2. Step 2: Convert to fraction form
    12,688.49/19,032.29 = 3,328.43/x
  3. Step 3: Cross multiply
    12,688.49x = 19,032.29 × 3,328.43
  4. Step 4: Simplify right side
    12,688.49x = 63,347,617.05
  5. Step 5: Solve for x
    x = 63,347,617.05/12,688.49
  6. Step 6: Final answer
    x = 4,992.53

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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.