Home / 30,886.97-42,601.52-19,558.31

Finding the Fourth Proportional to 30,886.97, 42,601.52 and 19,558.31

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Solution

The fourth proportional to 30,886.97, 42,601.52 and 19,558.31 is: 26,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,886.97 : 42,601.52 = 19,558.31 : x
  2. Step 2: Convert to fraction form
    30,886.97/42,601.52 = 19,558.31/x
  3. Step 3: Cross multiply
    30,886.97x = 42,601.52 × 19,558.31
  4. Step 4: Simplify right side
    30,886.97x = 833,213,636.84
  5. Step 5: Solve for x
    x = 833,213,636.84/30,886.97
  6. Step 6: Final answer
    x = 26,976.22

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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.