Home / 30,579.60-42,220.48-19,112.04

Finding the Fourth Proportional to 30,579.60, 42,220.48 and 19,112.04

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Solution

The fourth proportional to 30,579.60, 42,220.48 and 19,112.04 is: 26,387.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.60 : 42,220.48 = 19,112.04 : x
  2. Step 2: Convert to fraction form
    30,579.60/42,220.48 = 19,112.04/x
  3. Step 3: Cross multiply
    30,579.60x = 42,220.48 × 19,112.04
  4. Step 4: Simplify right side
    30,579.60x = 806,919,502.58
  5. Step 5: Solve for x
    x = 806,919,502.58/30,579.60
  6. Step 6: Final answer
    x = 26,387.51

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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.