Home / 30,570.52-42,196.32-19,961.80

Finding the Fourth Proportional to 30,570.52, 42,196.32 and 19,961.80

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Solution

The fourth proportional to 30,570.52, 42,196.32 and 19,961.80 is: 27,553.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,570.52 : 42,196.32 = 19,961.80 : x
  2. Step 2: Convert to fraction form
    30,570.52/42,196.32 = 19,961.80/x
  3. Step 3: Cross multiply
    30,570.52x = 42,196.32 × 19,961.80
  4. Step 4: Simplify right side
    30,570.52x = 842,314,500.58
  5. Step 5: Solve for x
    x = 842,314,500.58/30,570.52
  6. Step 6: Final answer
    x = 27,553.16

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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.