Home / 30,828.64-42,560.87-20,083.18

Finding the Fourth Proportional to 30,828.64, 42,560.87 and 20,083.18

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Solution

The fourth proportional to 30,828.64, 42,560.87 and 20,083.18 is: 27,726.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,828.64 : 42,560.87 = 20,083.18 : x
  2. Step 2: Convert to fraction form
    30,828.64/42,560.87 = 20,083.18/x
  3. Step 3: Cross multiply
    30,828.64x = 42,560.87 × 20,083.18
  4. Step 4: Simplify right side
    30,828.64x = 854,757,613.17
  5. Step 5: Solve for x
    x = 854,757,613.17/30,828.64
  6. Step 6: Final answer
    x = 27,726.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.