Home / 12,454.29-18,681.50-3,689.28

Finding the Fourth Proportional to 12,454.29, 18,681.50 and 3,689.28

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Solution

The fourth proportional to 12,454.29, 18,681.50 and 3,689.28 is: 5,533.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,454.29 : 18,681.50 = 3,689.28 : x
  2. Step 2: Convert to fraction form
    12,454.29/18,681.50 = 3,689.28/x
  3. Step 3: Cross multiply
    12,454.29x = 18,681.50 × 3,689.28
  4. Step 4: Simplify right side
    12,454.29x = 68,921,293.54
  5. Step 5: Solve for x
    x = 68,921,293.54/12,454.29
  6. Step 6: Final answer
    x = 5,533.94

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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.