Home / 30,979.92-42,774.48-19,059.28

Finding the Fourth Proportional to 30,979.92, 42,774.48 and 19,059.28

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Solution

The fourth proportional to 30,979.92, 42,774.48 and 19,059.28 is: 26,315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.92 : 42,774.48 = 19,059.28 : x
  2. Step 2: Convert to fraction form
    30,979.92/42,774.48 = 19,059.28/x
  3. Step 3: Cross multiply
    30,979.92x = 42,774.48 × 19,059.28
  4. Step 4: Simplify right side
    30,979.92x = 815,250,791.17
  5. Step 5: Solve for x
    x = 815,250,791.17/30,979.92
  6. Step 6: Final answer
    x = 26,315.46

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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.