Home / 19,712.82-29,569.23-4,921.72

Finding the Fourth Proportional to 19,712.82, 29,569.23 and 4,921.72

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Solution

The fourth proportional to 19,712.82, 29,569.23 and 4,921.72 is: 7,382.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,712.82 : 29,569.23 = 4,921.72 : x
  2. Step 2: Convert to fraction form
    19,712.82/29,569.23 = 4,921.72/x
  3. Step 3: Cross multiply
    19,712.82x = 29,569.23 × 4,921.72
  4. Step 4: Simplify right side
    19,712.82x = 145,531,396.75
  5. Step 5: Solve for x
    x = 145,531,396.75/19,712.82
  6. Step 6: Final answer
    x = 7,382.58

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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.