Home / 27,858.93-38,446.28-19,920.12

Finding the Fourth Proportional to 27,858.93, 38,446.28 and 19,920.12

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Solution

The fourth proportional to 27,858.93, 38,446.28 and 19,920.12 is: 27,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,858.93 : 38,446.28 = 19,920.12 : x
  2. Step 2: Convert to fraction form
    27,858.93/38,446.28 = 19,920.12/x
  3. Step 3: Cross multiply
    27,858.93x = 38,446.28 × 19,920.12
  4. Step 4: Simplify right side
    27,858.93x = 765,854,511.15
  5. Step 5: Solve for x
    x = 765,854,511.15/27,858.93
  6. Step 6: Final answer
    x = 27,490.45

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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.