Home / 30,579.08-42,160.06-19,804.92

Finding the Fourth Proportional to 30,579.08, 42,160.06 and 19,804.92

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Solution

The fourth proportional to 30,579.08, 42,160.06 and 19,804.92 is: 27,305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.08 : 42,160.06 = 19,804.92 : x
  2. Step 2: Convert to fraction form
    30,579.08/42,160.06 = 19,804.92/x
  3. Step 3: Cross multiply
    30,579.08x = 42,160.06 × 19,804.92
  4. Step 4: Simplify right side
    30,579.08x = 834,976,615.50
  5. Step 5: Solve for x
    x = 834,976,615.50/30,579.08
  6. Step 6: Final answer
    x = 27,305.49

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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.